To create a new project click the green New project button on the dashboard.
Surveys allow multiple questions per page with a one or two column layout. You can add any number of questions or presentational items (such as YouTube videos, images, text etc.)
Surveys and Forms are identical, the only difference is the default theme used. Forms use a minimalist styling which is ideal for embedding into your existing webpage as a contact or sales form.
Quizzes use a similar builder but you can assign points to individual answer choices and optionally add an evaluation page to the end of the quiz. Each page of the survey can be scored separately if desired with page totals and custom feedback given at the end of the quiz.
Polls are simple one question feedback tools, designed to be embedded into your website (but can still be distributed as a normal link/URL like the other project types)