If you are lower than 11 hitpoints then go to a staircase and allow an enemy to hit you while you're on the staircase. You'll recover up to 11 hitpoints.
Where the game starts at the first area there are two computers near the first savegame capsule. Use the talk button to see some bonus artwork and an enemy analysis list. There's also some bmp files 2 page comics and 2 posters on the CD.