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A simple notebook or spreadsheet is enough to start with - you just write down your income and expenses, that's it. Most people stress themselves out over nothing at this stage when a basic system works perfectly fine for the first few months. Once you start getting real volume, that's when you can think about dedicated software or hiring an accountant, but at the beginning it's overkill.
You're right that a notebook works, but you really need to organize it from the start or you'll get lost in your numbers within two months 😅 The thing isn't about how complicated the tool is, it's about having clear categories and logging things regularly - otherwise you'll end up doing catch-up stuff at year-end and that's a nightmare. A simple spreadsheet with a few columns (date, description, amount, category) is already better than an actual notebook because you can search and calculate subtotals easily. You don't need fancy accounting software, but a real system is way less stressful than leaving receipts scattered all over the place.
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