My name is actually Issa* haha :-)
And it depends honestly. For example I used an entire roll of 36 exposures in one day. And right now I’m trying to finish a roll from two weeks ago. So it really depends. I’m taking a heavy course load at school right now so I’ve been shooting mainly digital because I work for the newspaper.
So to answer your question it varies!
Usually like $5-6
I get my film developed at Costco. Its super cheap, about $3-4 for a 35 mm roll. But you obviously have to have a membership to develop, so if you don’t I used to go to walgreens and get just my negatives and a CD for like $7.
I don’t know if I have any tips since I still feel like I’m learning and growing with film. Maybe just don’t hesitate just because its film. I have several rolls that I haven’t finished from summer time and its because I wasn’t taking pictures consistently for a while because I felt like I needed to preserve my film in my camera. But I’m trying really hard to not hesitate when taking film photographs. So yeah, just shoot away!