business early in the morning 6-7 sort of thing, a part time kindy job, usually around 10 - 12/1pm and top it off with an after school position finishing around 6ish, add a few tutoring position in the evenings and your good to go.
The trick with part time is being able to get all the times right, if your one part time has bad hours then don't be afraid to drop it and move on.
You need to register to be a tutor, nothing major, local Gu office should sort you out.
AFEK is a good site, dedicated to people with F visas. lots of knowledgeable people there. I would recommend checking it out.
Put an ad on Craigs list / Daves / Waygook.