I work at Petsmart and want to give our jumping spiders the best care I can! Tips?

Hi everyone! I recently started as a pet care associate and want to make sure our regal jumping spiders are looked after for the best they can be — I’m looking for some tips for care! I own tarantulas so I’m pretty well reversed in their care, but don’t have experience with jumping spiders.

How can I tell if they need to be fed? Is it the same like with tarantulas - by just looking at their abdomen? How can I tell their age? Is it possible to tell their sex by just looking at them?

Thanks in advance!