On the top of MS Word you'll find the menu bar. Click on 'View' and then 'Header and Footer.' What appears is a dotted box already with a cursor inside. A floating menu bar also appears.
Now, you have thousands of free document templates that can be turned into web forms. What you need is, open MS word. Then you will need to go to your title bar and move to file. Here you have several existing templates to choose from. You can choose anyone among them and modify them according to your needs. Apart from changing the forms, you can start with a scrap or, blank template.