By non-adult, I mean jobs that are full time, 40 hours a week kind of thing.

I'm looking for a part-time job, preferably as an assistant manager.. but I guess it doesn't matter right now.

Is there a good job search website for THAT specific kind of job?

Everytime I do a job search I find jobs that are like "Office assistant" or "Kaiser permanente"
Should check monster.com, there might be links or some info about jobs, but I seriously have no idea of such kind of website. Luck.