Grocery shopping help

I am fucked. I do not have a car, and live in a large city. Thus, getting groceries a few times a week.

I have a really limited budget though; and I was just wondering if anyone could help me arrange a grocery list of food ideas I can reasonably get in one or two goes for a month or so.

Please, it would be really helpful.

I know the basics:

RICE PASTA SPAGHETTI EGGS OATMEAL BEANS...

And also, I am a total novice at cooking and am suprised I have not starved. ADVICE PLEEAASEEE