complete my dropbox code, add facebook API + allow users to post info., twitter API, & rate my app pop up

I've added the dropbox API and set up a button that will link to the users account but need help telling it what info. to upload. I need to upload the information users input into my iPhone app - logged workouts, shopping list info., foods added to their daily summary. Add a popup asking users to rate my application after a few days following the purchase of the app. Facebook API allow users to connect to FB and post info. (see images) Twitter: log in to twitter and tweet info (see images)