My free ad babies opened their eyes at 10 days, & the bigger ones were moving around within days of that. I didn't really handle them until they were 2 weeks old, apart from to put stray ones back in the nest (rub hands in Mum's litter first).
At 8 weeks, they need to be weaned from Mum. Boys need to be separated from girls shortly after. Boys can be neutered (some vets do 12 weeks, mine do about 16weeks), & 6-8 weeks later go back to live with their sisters/Mum. Females can be spayed from 5 monthish.