bfontes: Why is there no manual to download? I also couldn't find one in the installation directory. And googling doesn't seem to help either, except to find wikis and strategy articles.
You've probably already found this by googling, but this wiki contains detailed information on everything in the game, including everything you need to know about ships (and their systems, weapons and augmentations) and races: [url=http://ftl.wikia.com/wiki/FTL:_Faster_Than_Light_Wiki]http://ftl.wikia.com/wiki/FTL:_Faster_Than_Light_Wiki[/url]
Just ignore the sectors/achievements/strategy parts if you don't want to spoil things for yourself. Which is kind of hard as every ship description has a strategy section plus it tells you what you get when you unlock things.
There are also a couple of useful threads here in this very forum for new players if you find the going a bit daunting.