hello

im completely new here on the forum and completely new to everything about frequent flyers programs too. I ve never been part of any of those programs. But last week i booked an around the world ticket with the one world company with which i will fly 38600 miles in one year. I was thinking maybe it would be a good idea to subscribe to a frequent flyer program now to get some benefits. I went to have a look at american airlines, but there aparently its impossible to get a benefit from my miles as i already booked the round the world ticket last week. Anybody knows what i can do to enyoy some free miles anyway?

thanks a lot for your help