Help with Calendar App

I used to have a BB but just got a Droid Pro and I am super frustrated. I wanted to put an appointment in the Calendar, so I opened it and it says I can't enter any events until I 'sync a calendar.' The first problem is I don't have a calendar to sync with. It give me two options: Close, or Manage Accounts.

I go to Manage Accounts and it shows my gmail email account. If I tap on that, it shows a screen with 'Sync Contacts' and 'Sync Gmail' both of which are checked, and at the bottom of the screen I can select 'Remove Account.'

I don't know what to do!!! I am so frustrated. All I want to do is put in my phone's calendar that I have an appointment on Friday. Why is it so hard?

 

I tried that but it didn't get me anywhere.

I guess there's another option... I can add an account. It give me a screen full of options... face book, myspace, etc... I don't use any of these. I don't understand or see how opening a myspace account is going to allow me to enter an appointment into my phone's calendar.

Still need help if anyone has any ideas.