Buy and Sell Cars

Office girl

My son buys and sells cars, we are tying to get all the data in order, but I'm having a very difficult time understanding how to enter all information to see profit and loss.

Starting with account setting, after I do all the entries my numbers show red when it should e black.

Do I need a different program? Is the start value on my register, purchase price, cost after all repairs or sell price?

Please help!

[Edited for Readability]

NotACPA

1. Transfer cash into the "Autos" (or whatever you call it) register
2. Buy the car
3. Transfer in add'l cash as needed to pay for any repairs, etc
4. Sell the car. Any cash (as a positive number) is a gain. If negative, you've got a loss on that car.
5. You can leave the cash in the account to use toward the next car, or transfer that cash out and restart at step 1 for the next car.