What is buying on credit? How could I do that with a full time job (like 9.50/hour) if I wanted to buy a vehicle on credit ? How could I finance this purchase? What amount can I afford on a car... will I be in debt?

++ say like... 50 or so hours a week

Buying on credit means you are borrowing money from a lending institution to pay for your purchase. You then pay back the lending institution over time with interest on the amount borrowed. This can be either a specific loan for the specific purchase or using a credit card to make purchases.

There is no way for us to tell you what you can afford since we don't know your expenses. You need to create a budget to determine what you can afford to pay on a monthly basis,

I would say first you need to understand credit, how old are you,?

And you have to find someone that will loan you the money,

You create a budget, by totalling your income and then totaling your fixed and variable expenses. Fixed expenses are things loike rent, insurance, phone, taxes etc. Things you pay every moth usually the same amount each month. Variable expenses are things like food, entertainment, etc. You then see how much is left over.