Yup. I'm with you, Phil. I played around with a Timex Sinclair a little before that. Being able to build things was the hook that got me.

Very... My first programming experience was a Timex-Sinclair 1000 connected to a TV. Working the graveyard shift, I stayed up one morning to punch in a sample program from book or maybe it was in it's documentation. Hated the membrane keyboard. Hours and a few cups of coffee later I had a battleship game running in console basic. Then I wondered if I could modify it some it could continue to plot the cannon shot up beyond the top of TV screen. I made the change. Try it. It worked. I was hooked. Of course there was no storage. As soon as I turned it off, everything was gone.

Timex Sinclair's built-in BASIC

Are you going to add accountNumber's together? Are you going to divide on accountNumber by another one? An ex-coworker of mine use to make anything called a number (SSN, phone, account) a numeric type and it would drive me crazy.

Since you just created the list, its count is zero so it will never step into the while loop. Is it that simple?