That's great stuff. I love it!
Apart from what was said already, here are some more suggestions:
The tutorials of the different screens (F4-F8) could be over a screenshot of an example of the respective screen. It's a lot of text to ingest, and having a visual representation of what it's talking about may make it clearer and at the same time feel less like a wall of text.
Of course it would be way cool to have short cut scenes for the combat tutorials or the docking tutorial. In case of the latter some screenshots in the background would be useful as well.
On the "Combat flight" screen:
UNTARGET MISSILE: 'u' will disarm the currently selected missile/mine
On the "Capacitators" screen:
check the calculation of energy banks. The screen tells me that I have 9, but my Imperial Courier only has 8.
On the "Witchdrive" screen:
last full stop in the parenthesis is missing ("longer jump.").
On the "Fuel Scoops" screen:
in the first paragraph two different dashes are used. The second one should be long as well.
On the "Legal System" screen:
"when your bounty rises to at least 50cr" should be "above 50cr". With 50 you're still offender.
On the "Combat rating" screen:
here's a problem with the lore. Isn't it the Elite Federation, not the Cooperative, which counts your kills and gives you your rank?
in the last paragraph there's the full stop at the end missing ("not pilot).")
On the "Confederacies" screen:
shouldn't the "Interstellar Council" rather be an "Interplanetary Council"? Although they could also just as easily be overstating themselves.
On the "Anarchies" screen:
the second planet name changes from Measin to Adien.
On the "Thanks" screen:
"purchasing a Imperial Courier": there should be an "n" inserted, depending on the player ship's name.
All in all that's a really impressive effort! I especially loved the government type descriptions. But everything else as well, really.