Jobs in Japan for Foreigners?

I am coming to Japan to go to a Language School this coming April and I was wondering about jobs, I know I can only work at maximum 28 hours a week and I was wondering what kinda jobs can I do with little Japanese ability? (at the start of it at least)

I know a lot of foreigners become English teachers but I don't have a bachelor degree but I do know about the TESL course and I can finish that before April but I'm pretty sure I would still need the degree, right?

Thanks!

Since you will be on "student" resident status (I assume), you don't need the bachelor's degree; the degree is an immigration requirement for a visa. So if any English language school is willing to hire you part-time, you could teach.

I know some Japanese language students who work in restaurants or convenience stores, where routine, set phrases are needed (but at least you'd need to be able to converse with the store manager).

Oh alright, should I still get the TESL diploma?

I think so.

Off topic, but could you tell me more about the language courses you're taking? Or a link

http://gogonihon.com/