Increasing the amount of WBS elements increase the management time necessary to keep up the program and upgrade programs. The absolute simplest method is to just make a list of their sales income and another selection of their purchase expenses. If you'd like to secure more info, click the logo below. Or in the beginning, you can make easy spreadsheet document to keep your eye on your expenses and income. Simple spreadsheets you can set up using software such as Microsoft Excel will help you keep on top of everything.