Now no doubt it will be a fun experience!, thank you all very much for the guide and tips.

I like a lot the 767 so that will be my type but I think I'll take Mark's advice and first fly something not so complex like any default.
By the way I'm not sure what is keeping our friend Mark out of online routes, but as windplayer says, maybe one day he'll be there  ;)

About ATC, yes, I've been listening to it for a while and practice talking to default ATC what as you said it's just enough for beginning. On default ATC, I even turned off the text and the pilot voice (me) so it be like realistic and I have the clearance repeated at least twice  ;D
I didn't know about the CRAFT! many thanks I'll know what to expect.

By the way, do you guys do paperwork? I mean with this write down airline flight number, weights, routes with waypoints, etc?