Yeah, and when you're done with it, you might also read Warof the Worlds from him on that same page. Project Gutenberg is great, especially when you live in non English speaking country. Too bad they can't usually publish anything younger then 1923 or something, because of all the copyright crazyiness.
Ah well, good that some books (http://www.gutenberg.org/etext/2199) are much older then that. I don't even want to imagine what would happen, if our current copyright laws were in effect at that time.
BTW, it also has czech books: http://www.gutenberg.org/etext/13083. That's where the word robot comes from. Sadly, they only have it in czech. But with little practice...