When Starting out get stinging nettle pants and shirt ASAP
You can wear two of both. That will increase your survival.
shoes can be made from wood block (with carpentry)
Dried aniimal skins allow you to create other clothing and capes.
Gear,weapons,and armor is all vital to your success, here are some that should help
Outfit for new newbies.
Linen Pants(Don't loose this, its vital for survival)
Outfit for more experienced newbies.
Boar tusk helmet