A contractor finishes a job on a Tuesday. The client pays cash. The contractor stuffs the receipt in his glove compartment and tells himself he'll deal with it later. Three weeks pass. He can't remember which job that payment was for. His bank account looks fine, but his records are a mess. This gap — between the occurrence of a transaction and its proper recording — is where procedural errors can arise. The solution is a structured process: a repeatable path that every transaction follows, ensuring it is accurately recorded and traceable. In double-entry bookkeeping, every transaction touches at least two accounts — debits and credits in equal amounts. Now the question is: where does a transaction actually start? It starts with a source document. Think of source documents as the physical or digital proof that something happened. Invoices, receipts, bank statements, payroll records, purchase orders. These are the raw evidence. Before you record anything, Jonathan, you need that evidence in hand. A bookkeeper who records transactions without source documents is guessing. And guessing creates records that can't be verified later. Once you have the source document, the first stop is the General Journal. It's often called the book of original entry — and that name tells you exactly what it does. Every transaction gets recorded here first, in chronological order. A complete journal entry includes four things: the date, the accounts being debited and credited, the dollar amounts for each, and a brief description of what happened. That description matters more than people think. Six months from now, when someone needs to understand why that entry exists, the description is the only explanation available. The process of analyzing the event and recording it is called journalizing. After journalizing, the transaction moves to the General Ledger. This is the book of final entry. Where the journal records transactions in time order, the ledger organizes them by account. Every account — cash, accounts receivable, rent expense — has its own page in the ledger. Posting is the act of transferring each journal entry into the correct ledger account, including the date, amount, and a reference back to the original journal entry. That reference is critical. It creates a cross-link between the two records, helping you trace a ledger balance back to its source. [short pause] That trail is what makes an audit possible. You might be thinking — software handles all of this automatically. And you're right that modern tools post transactions instantly. But here's the key idea: software still requires you to categorize correctly. Suppose a bank feed pulls in a payment and you assign it to the wrong expense account. The journal entry posts. The ledger updates. Everything looks balanced. But the data is wrong. Understanding the manual path — source document to journal to ledger — is what lets you catch that error. The mechanics don't disappear just because software speeds them up. Once all transactions are posted to the ledger, you can produce a trial balance. It's a summary listing of every account and its current balance. The rule is simple: total debits must equal total credits. If they don't, an error exists somewhere in the posting chain. The trial balance doesn't guarantee perfect books — a transaction posted to the wrong account can still balance — but it's a powerful first check before financial statements are prepared. Journals and ledgers together make that check possible. Remember this sequence: source document, journal entry, ledger posting, trial balance. That is the accounting cycle's daily engine. Every financial statement your clients will ever rely on — the balance sheet, the profit and loss — traces back to entries made in that exact order. The takeaway is this: transactions flow from the General Journal to the General Ledger, forming a permanent, traceable record of everything a business has ever done. Get that flow right consistently, and you become the person a business can actually depend on.