Reset Pills.

A common problem among new players is that due to the learning curve & mistranslations, and generally overwhelming amount of knowledge point categories and subcategories, many end up messing up their stats & resetting several times at low lvls, then run out of pills at lvl 16+, and cant equip their weapons. After using up their free pills, the only other way of getting them is through Cash Shop or buying from other players, but that isn't cheap, specially for a beginner. So here are a few suggestions.
Until lvl 15, you can do whatever you want with your knowledge points. This is because as long as you don't go over lvl 15, you can buy reset pills from any supply shop, for only 1 Goda (in game currency).
Once you reach lvl 16 though, this ends, and you are only given 2 free reset pills at around lvl 21. If you read the first parts of this guide, you shouldn't have problems equipping your armor and weapons, if not, this is a very short briefing:
- Save knowledge points whenever you can.
- When applying knowledge points for armor parts, priority is Body > Engine > Weapon > Arm/Cabin > Head/Legs > Core.
- Only apply knowledge points when your armor/weapon requires you to do so.
- For weapons, use primary 1, then medium 2 primary 1, then advanced (advanced 1 or higher) as soon as you can.
Now, if you screwed up, and don't have enough points to use anything, don't waste your reset pill just like that. Instead, switch to a lower rank armor (even green is fine, since you get it by trading crystals), and a weaker weapon (swords work, since they don't need any knowledge points). Train using those, and as soon as you lvl up, you ll have more knowledge points available. Reset pills should always be saved, and only used when you are absolutely sure that you will not need the points you might have misplaced, or that you will never need to reset again.