When you start, gather lots of those low tier resources without using learning points to speed up your progress. Its waste of LP's to use them at start and its better to save them for weapon and armor skills. It doesnt matter if you have gathered couple of thousends of different resources, you will need those so much and specially if you start as a solo player. Only rabbit skins is something you dont need later, so just hunt those little bastards less than other.
Dont try to craft everything, just focus on few things. Its just waste of resources. It might seem to be great idea to craft all your gear yourself but dont, you can buy the rest gear you cant make from auction house. At start you should craft all gear to T3 (its easy) and after that make a craftingplan. Think off what kind of weapon and armor build you want to use and base your crafting partly for that. Lets say you want to play a full tank. Choose one plate piece (helmet for example) and focus to craft that. Buy the rest. This way you focus your metal bars to one thing. Maybe you can then choose shield which needs mostly wood..
Now its also up to you how many different things you want to focus on. You could select like leather chest line and cloth shoes for example, but only one armor piece / resource. Dont make plate helmets and plate chests, if know what i meen. You dont have to focus on cloth for example at all if u dont want and you can sell all gathered fibers.
Same thing in farming, cooking and alchemy. Choose one cooking or alchemy line and focus on that. Farm crops and/or animals you need for your cooking or alchemy.
You can also focus on mounts, tools, bags, capes etc.
This is just for start. Still make up your own decions and test different kind of things out, so you are ready when the actual release happens. Try to think a gameplan, that helps.
You will also need lots of stones to upgrade your island's buildings, but u need less stone in crafting. I am actually hoping that they takes T1 roughstone away when making T2 stoneblocks. Thats super annoying.
Have good time with grinding.