Skill problem

You create the respective skill book, and use it to get a skill scroll to unlock the skill.

Skill books are craftable items, but Hunting doesn't require one.

What is the translation of the error you provided?

There is an error on the screen that seems to have happened after clicking, but I don't speak that language and don't know whats written there - that information would be necessary for any further investigation.

Originally posted by 焊工靓仔: May I ask how to solve the energy problem in the early stage, ah, windmills and water wheels need a thing that should be called lubricating oil to produce

You can make it via the grease from tallow recipe on the butchery table, the tallow you get for example from some campfire recipes.

Originally posted by 焊工靓仔: There's no recipe for an iron pick

The Iron Pickaxe is made on a Grindstone.

It's worth it to use the tooltips you get when hovering over item names - they show exactly what a item is made of and where it can be crafted.