Shekki's Guides.

Mithril

This is one thing you want focus on early game, it's not worth of selling, though if you can sell high and buy low it's fine. Check battle and TS guides to see how this should be used. It's not bad idea to get everything to the 10% first, because that's fairly cheap thing to do.

Reward Points

In general it is good to get 1 or 2 credit crates, 1 mithril crate and 1 scrap crate, this will get you slight boost to get early extra autos. Rest RPs you can sink to Custom Ranks. If you don't need those, use only 30 mins of triple, maybe hoard up on those and when you have time to play actively drop it all at once to get 1-2 hours of triple, people will be amazed and pleased.

Equipment

You should always get equipment at new tier, or sooner. No point invest new gears when you hit next tier after few levels. As for equipment drops, scrap those if it's worse than your current equip, also purples and orange gears are worth to scrap once you hit around T3. Don't market below purple-orange stuff you sell scraps way faster. About Pandora's Boxes, opening them below 51 lvl is waste, so save them until then or when you get on next tier (61, 71, etc.). Also note that you can use mythic gears for 2 tiers and if you are poor do the same to artifact gears as well.

Don't know what focus for?

Well, decide between battle or TS it can be hard, you can go hybrid, but that mostly keeps you weak at both for long time. It's better choose battling or TS. Both of these are good sources of gold, but TS is better. Battling will get more income in long-term, that's because TS has cap, and as you keep leveling battle, you get really nice income from scraps, on the other hand you also sink a lot of gold to gears and you need max more boosts on battle than TS.

EDIT: It's really good choice to do both! If you keep battling you don't make much money and everything becomes more and more expensive. There for you should TS for keep gold in your pockets. I've seen same level players but other one has more stuff maxed because he has done TSing too.

Action timer

Actions run slower depending what browser you use. So here is few solutions: Give it own window or download IE tab (for chrome) and open BoL there in both scenarios actions run perfectly. Bot sure about Firefox but IE runs actions smoothly even on tabs (NOTE: Stabzs doesn't support IE, so if you have any problems with BoL, try get out of IE to fix them. This includes IE-tab for chrome).

If you use phone to run autos Dolphin Browser is recommended for IOS and android, it runs autos even screen is off or so I've heard. As for window phones, I heard that some windows phones allows screen off auto runs but I don't have tips for that. You can try Screen standby app for IOS/Android, but that can require rooting so be careful. It only turns off screen completely and doesn't actually lock the phone. You could try other apps like this as well. On your own risk. I recommend just keep charger on your phone and keep phone on all the time.

Actions are coded as 5.5 s and 6.5 s, but there is always lag, everything isn't done instantly. Lower ping helps; just example my phone runs autos ~7,3s and laptop ~6,9s. There is 3 things that effect speed of auto, first of all; Ping - your connection. Second is your own device you use phone/computer and third is the server itself. You can only effect ping and device speed.

Skill & general info

See Skill path and follow guides there. Note: Orange is main path that you should follow.
Turquoise numbers
1&2: I recently got great tip for start. Early accuracy can make you jump more mobs than just following main path. But, you need reset at lvl 42 to get GS.
4: This is also 1 skill that people likes, though you don't get attribute boost drop skill. I still recommend main 4 cause more attributes = Faster you can jump mobs.
6: When you have max accuracy and all skills, you can reset to get rid of main 6th skill and get a gold drop, but it might not to be worth it, it will take long to earn gold back from those 50 credits.
9: You can choose this instead of main path, but you only get more drops. I recommend still main path, faster you level on high levels the better.
Some people says that early accuracy isn't that good, at least for accuracy gems cause they have low power. But for skills it is +5% and +5%*current accuracy, that's pretty nice increase. I still believe getting accuracy skills AFTER GS is good choice.

There is few spots on battling that are game changing and you should look for get them asap: Two-handed (5th) great swords are better even with lvl 1 skill so get GS ASAP, Deadly aim (10th skill), maxed mithril critical chance/hit and accuracy 100%. About expertise, it's not smart to keep attributes at the caps, that way you only lose attribute points. Always expertise before attributes hits the cap. Don't worry if your attributes are unbalanced they will balance when ever they go over next 500. (Every 500,1000,1500 etc). There is also chart what kill% you need to move up on mobs: goo.gl/I4NrQk Keep in mind that higher kill% means more drops and faster quests.

Since I have found out that accuracy is really powerful until you have it maxed I should open up accuracy skills and accuracy gems. There is 2 accuracuý skills, they both add same amount accuracy, they give *1.05 more accuracy, if you have both maxed it's *1.1. With 80 accuracy, you can get 84% with 1 skill, 2nd skill adds another to buff it 88%. Gems simply add +0,01% each power value they has. Example: T6 crafted gems have power value of 25, it will add +0.25% per gem, so to 75,55% accuracy it will boost it to 75,80%.
 
Mithril

Normally people start with 5% barkskin -> 5% Critical chance -> 10% barkskin -> 10% Critical chance, that's a start. After this put 10% on everything, and skip TS boost of course, because it's fairly cheap thing to do. Once you done that keep leveling critical skills. Most optimal way to max Critical skills: Optimal critical hit & chance Basically for each point of critical damage invested in the left column you should have invested the number of critical chance points in the right column. ALWAYS max everything (Except TS) else before touching boss skills (10-25% is acceptable). If you don't care about bosses save valor, heroism and resilience last to max. Critical skills and barkskin helps most to get better mobs. You could completely skip boss skills if you like.
Summary: 10% everything, critical chance & critical hit optimal way and max those, max barkskin, max resilience and if you want: max valor and heroism.

Credits

Every 10th EXP boost buy 1 attribute drop boost. However in general maxing order is: EXP > QH > Attributes > Drops > Gold. QH is very powerful and most people see it as 1st thing to do and I agree, as quest reward grows so much and will provide your most income later on. However EXP boost makes you progress faster and I would personally recommend it first thing to do. So balance between EXP, attributes and QH you should be fine. Most people choose not to buy gold boost as it is 2500 credits and hardly increases your income..

Battle is most efficient when you hold enter down. If you run game by phone or you actually need use autos, buy them, they will make life easier. I suggest about 135 autos, that is 15 min worth of autos and aren't insanely expensive (Still over 1,000 credits). Amulet and ring should be bought by credits not RPs, when you can afford it or where you see that extra gems will help you out (Maybe at range 31-51 level).

Gears

After you hit level 21, (T3) it's time to care equips more, at least your sword can't be purple. Put your most money always to sword other gears can be worse if you can't afford it. Enchants are rather cheap, so you should do so (It was cheap, atm focus to enchant your weapon at least.). You should aim up to relics or artifacts, mythics are way too rare and expensive.

About gems, I don't know much but I would prefer full ATK gems, and always crafted since they give better bonus. You can just deconstruct all those gems you get as drops. Other gems aren't bad either, expect evasion. Health gems can be useful if you use them right. If few health gems makes you jump on mobs go for it, however this is  fore very high levels, like Strykes uses few health gems to survive hits from last mob of the game.

I would recommend health gems over defense gems. Let's say that you have +8500 heatlh, and mob hits you 3,000 per hit (You survive 3 hits). If you get your health over 9,000 you can take 4 hits. It's cheaper use health gems than decreasing damage taken from 3 hits with total of 2,500 hit points. On early on you should look for accuracy gems and maybe few ATK gems, personally I would get all accuracy gems until I get 100% accuracy. There is also special gems like critical damage gems, they are more powerful than attack gems but costs way more, up to you if you want get those. Make sure your mithril critical skills are maxed first, and get DA.

Note: Accuracy will be better what closer you get to 100%, at early game accuracy gems doesn't give much, you might do better with HP/attack gems. 

TL;DR: Focus on Accuracy gems when you get close to 100%, if not focus on attack and health gems. Here you can see gems power each tier, some values might not be accurate!

TS in general

There is certain skills you want from skill trees, so smart thing to do is start full battle and use your free resets on mithril, skills and credit boosts. Always choose 1 TS skill at the time, don't look market prices they all go up and down. TS has about 1/3 attribute drop rate to compared to battling. There are few spots to start TSing listed as below.

LVL 21
+ Max mason
+ Early start
- Not good in long-term
- No EXP gems

LVL 51
+ Most efficient spot
+ EXP gems
+ Shields (More gems to equip)
+ Mason
+ No downsides actually

LVL 71
+ Mason
+ QH
+ EXP gems
- Longer leveling grind
- No shield, but QH is more powerful in general than +5 EXP more.

LVL 92 (or 101)
+ Mason, Shield (lvl 1), QH
+ EXP gems
- Long ass level grind.
*All spots are 1 over because you hit new tier by then, and it's not smart just leave one level away from next tier.

Skills

See path here: TS skill path follow this path. At 9: a) you can get more EXP if you want be hybrid or help your clan to level up b) Makes you little bit stronger in battle, maybe get up in mobs but you don't really need it if you full time TS. Or you can simply pick other lower skills too. Remember, I suggest go full battle at spot you want TS and use free reset to build your TS skills, mith, etc.

Mithril

Isn't that obvious? TS boost only, you really don't need other skills.

Credits

Now this is easy; QH > Drop. Done, I guess you can go attributes but, if you don't battle what's a point, if you plan to battle why not. Also amulet and ring is worth of get that is +10 EXP more with TS exp gems. You could buy wardrobe for bosses since you can switch from TS gears to battle gears, only if you get battle gears. Always keep some extra credits to increase your TS caps. And for this too I recommend 135 autos ~15 mins of autos.

Scraps are thing you definitely should do, it's easy and free money after all.

1. Go to Legendary Equips shop and buy every Poor item (white ones). This can be done only once in a day. You can do this every tier even they cost more, but you get more scraps.

2. Go your inventory and (mass)destroy [D] them. Every drop below Epics (purple ones or even orange) should be scraped and if it's worse than your current equip. Tick rare box when you mass destroy.

3. Check market place for current scrap price. Choosing high price you sell them slower but get more income.