The most important thing is to make sure you record each expenditure when you make it, keeping a receipt, if possible. You can do your bookkeeping with a pencil and a little blue notebook, but it’s much easier if you do it with a computer. There are lots of simple accounting programmes. Bookkeeping programmes, such as Quicken, are not expensive, are easy to use and allow you to post expenditure according to budget categories and generates a range of different reports. The easiest way to record overall results is to use a spreadsheet programme like EXCEL. .