How can I get resources and materials for crafting tools or construction
You will get some resources in camp when you enter the game. After that you can get resources and items from other maps such as the Forest, Mine, Swamp or Military base.
You can also get resources from random events like humantarian relief supply and millitary supply airdrop. When anyone in your team finds a military supply airdrop, act quickly to get it because airdrops contain large amounts of supplies.