The GCF LearnFree website provides lessons on all sorts of topics, including tutorials on using Microsoft Office. It covers Word, Powerpoint, Excel and Access for Office 2016 and earlier versions. Think of the skills you might need to develop and see if you can find a lesson which guides you through how to do some of these things. Whether it is using tables in Word, Inserting pictures in PowerPoint or Formulas in Excel this site has lessons to help you with practice activities.