I've just created an Excel worksheet for my monthly expenses. Never really worked with functions in Excel before but it worked out well. Makes it much easier than to always add on paper. It now shows the total expenses, split in a variety of sub-categories (like leisure, food, clothes etc via dropdown menu) and per week.
Yes, anyone mildly experienced with Excel could've created it in the blink of an eye. It probably took me 30 minutes (most of the time spent figuring out how to get expenses per week shown) Still happy.
Congrats, Piob, on both accounts.