What to do with watch repair kit

Question

i got this neat little watch repair kitwith watch case holder with 4- pins plastic box of tools looks like a rachet with adapters toit i just want to change batteries in my little cheap watch and put a band on it i don't know what to do with them now that i got them no instructions.
13 pcs. tools
2 watch back openers
2-knives
1 case vise
2-tweezers
6 s***w drivers
just a retired grandmother trying to fix her watch help linda