1) Launch TextEdit
2) Make sure the document is rich text formated (Format > Make Rich Text)
3) Make a table (Format > Text > Table), a window pops up allowing you to determine the numbers of rows, columns, and cell borders.
4) Enter your data
Honestly, your best bet is to use a spreadsheet program or iCal. NeoOffice is free and it is easy to figure out how to do the basics. iCal is designed to help you schedule your life. The schedules are printable.