its the beauty of google calendar.....its primary is online, so just sync your other devices to that google account and shazam, you are all synced up.....back in the day trying to save a calendar and then import it to a new pocket pc, computer etc. what a hassle!
when first setting up calendar on phone you have to keep in mind it does tend to default to "my calendar" vs "youraccount@gmail.com" . my mom was having calendar issues, couldnt see her calendar, on her phone and we realized she hadn't selected the correct calendar. once she unchecked "my calendar" and checked her account calendar all was well.