Q: How to get Materials like Wood, Stone, etc?
A: If you don't have the proper tools, you will need to learn "Punch" which unlocked once you learn "Slap", punch allows you to punch a tree to get Wood, Vines, or Hard Wood, gathering materials usually consume action point.
Q: How to fight Rat/Chicken/Non-Hostile Mobs?
A: Open Class Skill Menu and Learn "Slap" from Survival Skill Tree, that skill allows you to slap the neutral mobs and turning them into hostile mob and triggering battle.
Idk if you understand English but if you don't know about something checkout FAQ/Frequently Asked Question, thankyou.