The document discusses the process of posting journal entries to individual accounts in the general ledger and preparing a trial balance. It explains that a trial balance is a list of open ledger accounts and their balances that is prepared to verify the equality of debits and credits. The document also outlines some common errors that can occur in a trial balance such as transposition errors, sliding errors, and amounts posted to the wrong side of an account. Steps for locating errors in an unbalanced trial balance are provided.