The basic idea of accounting is really simple. It is based on double entry bookkeeping, which was created during the Italian Renaissance.
Everything is an account, including sales, and every transaction is a movement from one account to another. One account has its total incremented and the other has its total decremented by the same amount. Everything adds to zero.
The cleverness lies in categorizing the transactions so as to save money in taxes. If you enjoy going through stacks of tax law, then it will be lots of fun. I am guessing this would not be your cup of tea.