Yes you need to heat their enelcosure. They need an ambient temp of about 80.
You can handle them, but dont do it often. Skin oils and such can be bad for them and yes they do jump. They also need a fairly high humidity.
I feed mine crickets every other day, although my female looks like she is getting a bit too chubby.
Read lots of care sheets before you decide. Ive noticed info differs quite a bit on them depending on the site. They can be a bit more difficult then other frogs, but not too hard.
I suggest ordering them online. They are somtimes hard to find at pet stores and they dont always know how to take care of them...
good luck!