Question about my 1994 Toyota Camry not starting?

Hi there,
I went to start my car today and to my surprise it wont start. It switched over (a really weak sputtering) but never fully started up.
I'm suspecting something is wrong with my battery but it may be worse... I hear you can also bang on the started but I have no idea what it looks like or where it's located.

On a side note, the other day It would start then about 10 seconds later it would actually "stall" it even happened while I was a light (I had to keep the engine revved up to keep it from stalling).
I'm guessing this is related to my problem.
Any advice?? It's finals week and I'm without a car.

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