I'm the ultimate fighter, I'm killing everyone and I'm picking up EVERYTHING. What do all these items do?

To be as short and to the point as possible.Pigments will help you level your skills. For example. Black pigment is needed to level your Spear and Shield skills. White will be needed to level your leather armor skills. The map (M by default) will show you the world map, on the left there is a tickbox where you can click PIGMENTS and it will show you all the zones that drop the pigment you are looking for. This goes for resources and reagents as well.Resources, such as wood, hemp, leather, etc, are needed to build settlements or open up new areas. It's also valuable for you to level up your weapon and armor DIRECTLY. Basically you start with a default weapon and armor when you leave the tutorial but if you view your character screen (C by default) you'll see that your weapon and armor slots are empty. Think of it this way. Your default items are considered -1 tier. As you level up you unlock the ability to craft higher tier weapons automatically going from +0 all the way to +9. The higher the tier, the more resources it requires to craft. You will want to craft your +0 weapon and armor ASAP. The basic item stats given even at this level are a good boost to your ability to survive and farm mobs in PvE. DO NOT WORRY ABOUT ADJUSTING STATS AT THIS POINT. JUST FARM WHAT YOU NEED AND CRAFT IT.Reagents come in a variety of names that usually end in TAL. These are necessary to adjust the stats on your weapons and armor that you craft. Want to add more health? You're going to need Blood of TAL. But remember, it's a give and take system. If you want to add more HEALTH to an item, you need to remove points from another stat (which costs nothing to do). So if you want to play a super tanky, hard to kill mother chicken. You could remove all stats from everything and dump them into physical/mental resistance and health but at the cost of being able to move as quickly as other players or use your abilities as often. Play around with it once you get a better grasp of the game and how the stats work.