NASA’s Return to Flight site features details on the space shuttle mission, crew and shuttle, introduced by Scott Bakula who plays Captain Archer on the bridge of the (Star Trek) Enterprise.
There’s a lot of video there, and plenty of information about how the shuttle itself works. A strong emphasis on safety comes through loud and clear. Something I found pleasantly surprising was that most of the crew of astronauts are about the same age as me. For no particular reason (the influence of TV shows probably) I had imagined they were all about 25.