A good starting point in your quest to make a home budget, is to take stock of your current and recent situation, and list out all your monthly outgoings. If you only do this from memory, there is a chance you will miss one or more important items. You probably have several sources of information on what those regular outgoings are, and whether they are easy to find depends on how well organised you are with your paperwork. It is worth checking back over at least three months bank and credit card statements, and jot down what your regular payments are out of those. At the same time, you can also make a note of items of expenditure that may recur later on.
For each of the items listed, decide whether they are monthly, quarterly, or yearly, payments, then repeat the monthly amounts in all the columns that apply. For example, monthly payments will go in all 12 columns but quarterly in only in the four columns when payment is due. The next stage is for you to consider what other necessary expenditure will come out of your income every month. These other expenditure items probably do not show up as regular payments in the first stage, though individual payments may. These items may include food, household goods such as detergents, car maintenance, petrol (gasoline), and fares, which are essential to you, and you need to budget for each month.