Moon for me i guess.Mars would be next,then LEO because of the view and to experience the ride in the Shuttle. I can imagine how hard would it be to actually choose a trip if someone was offering me one of them.
From the add on page.
Installation:Simply unzip the archive into your Orbiter directory.
NOTE: Install the Shuttle Fleet BEFORE installing this add-on.
I just downloaded it and works just fine.
You can get an expansion pack for the shuttle fleet with many different missions.There is also Space shuttle ultra,but be prepared to spend some time learning before this one.(my laptop won't handle the SSU,so I can't tell you much about it though)
Expansion pack here...
Reentry is one of the most difficult things in Orbiter,so there is no easy way to explain it.
To answer your question of reentry burn. You should make deorbit burn on the opposite side of the earth.During the burn,watch the periapsis and burn until this is just around 30-40km above the earth...
I launched the Shuttle manually to intercept the ISS without launch MFD.
Just plain map and orbit MFD's. Eyeballed the heading and got into orbit.
The real surprise was the plane alignment required only 15 second burn.
Very happy moment.