Hey there:
1) this is a number, the number of years of length of your program. Example: 3
2) Make after you filled the information you clicked "save and add", then the fields should be empty and you should have an entry in the table below, like this:
h ttp://i.imgur.com/u3ZirjS.png
3) Make...
Yep, it's the official one. if you go to CIC website, in the footer the have the social media link, which then takes you to the listing and for Twitter it is the same user. @CitImmCanada