The simplest way to get started with your Microsoft account is get the product key first. It is an 18 digital code that authenticates your Microsoft account and makes its usage limited to you only. Follow the steps given below in order to get started and activate your Microsoft account. 1. Visit office.com/setup to begin the process. 2. Sign In or Sign Up to create a new Microsoft Account. 3. Get your Microsoft Office Product Key and enter it here. 4. In the next step, you have to select the Country you belong to and your preferred language. 5. Now download the setup and follow the instructions given on your screen. 6. Once the installation is complete try running any Microsoft application. Hope this answers your question. In case you are still in doubt, feel free to get in touch for instant response.