I'm new to apple, and o created an Apple ID no problem and I can use it in the App Store. But whenever I try to activate iMessage it tells me that there was an error and that it couldn't activate, what do I do??
Welcome to iMore! As funny as it sounds you can always try signing out of iCloud and then signing back in at Settings > iCloud, resetting your device, and then trying to activate iMessage again using Ledsteplin's instructions. This has worked for me. Just like any device, it can sometimes be finicky and might just need a little bit of a refresh.