As you gather this information and provide them with valuable content that helps solve their needs (or even open their eyes to a need they didn't know they had), you can start asking for more information from them. Consider making some fields required; usually these fields are identifying information and information you need to categorize your leads. Other fields make optional; these fields are the nice-to-haves but aren't required to help you segment. In conjunction with smart fields and progressive profiling, your ability to remove fields of known data and replace it with new data makes form submissions easier for your existing contacts.
Building your form - After you determine the settings for your form, you'll be taken to the form builder and you will land on the first page of your form. At any time, you can jump back into the settings by clicking Form Properties in the top right of the page. In addition, you can jump to additional pages of the form by clicking Page List in the top left. To name the page, click Page Properties in the top right. The name of each page will be visible to users filling out the form.