When you want to create a survey that contains questions that already exist, you can simply create a new survey template and select those existing questions from your library.
To create a survey that contains questions that have not yet been written, read the article on How to create a new survey from scratch
Steps
Click Create in the top menu
Select More Options
Select Survey from the extended list
You arrive on the Create Survey page
Enter the name of the survey in the Name field
Select existing questions from the Your Questions Library by pressing the Add Tracker button
Questions you add will appear on the right side in the Your Survey Questions section
Scroll to the bottom and press save
You arrive on the survey’s page