"Workshop" menu to get to many options including configuring controls and controllers. ("ReMap Keys/Controllers" button) See the FAQ as Olham kindly points too. Many of your questions have been asked before and are covered in some detail in the FAQ document.

How to install, CFS3 what is needed etc. NO usually you do not need to install CFS3 if you have it on disk (only install if it's a very old disk as it needs updating to CFS3.1 first). Anyway check the FAQ please.

If it's a downloaded CFS3 then you'd need to install it first if it's not in an ISO format that could mount for example.

Regards,

Polovski,
OBD Software, developers of immersive flight sims;
Wings Over Flanders Fields and Wings Over The Reich
http://www.overflandersfields.com
http://www.wingsoverthereich.com