I spent pretty much the entire day reading Atomic Rocketships of the Space Patrol [1] (otherwise known as “So You Wanna Build A Rocket?”) and it was time well spent. Just about everything you ever wanted to know about rocket [2] and spaceship design [3], from staffing [4] (crewing?) to space warfare [5] to holding on to the reigns of a galactic empire [6]. There's even a section on futuristic games [7], a bunch of which I would love to try (any Trekkers [8] for Fizzbin [9]?).
[1] http://www.projectrho.com/rocket/
[2] http://www.projectrho.com/rocket/rocket3e.html
[3] http://www.projectrho.com/rocket/rocket3f.html
[4] http://www.projectrho.com/rocket/rocket3k.html
[5] http://www.projectrho.com/rocket/rocket3t.html
[6] http://www.projectrho.com/rocket/rocket3ac.html
[7] http://www.projectrho.com/rocket/rocket3ax.html
[8] http://www.iftcommand.com/