Is there anyway to read these books without actually buying them? I don't exactly have the money them.
I am not aware there is a free version of Champions Complete. Your best bet is knowing someone who has a copy and is prepared to lend you theirs. If you have a local game shop I am sure they would let you flick through a copy to see if you liked the look of it.
However, if you just want a taste of the Hero System in general, to check out whether it is right for your game, there is an inexpensive digital product called Hero System Sidekick.
The blurb says: The HERO System simplified! SIDEKICK contains all of the core HERO System rules, including character creation, combat and adventuring, and equipment - but without all of the additions, options, and details found in the standard rulebook. SIDEKICK boils the HERO System down to its essential elements so players can easily teach themselves or others the game. A great book for beginners and long time HERO gamers.
Anyway, you can download it from e23 for $3.50, here: <a href="http://e23.sjgames.com/item.html?id=DOJHERO106" rel="nofollow">http://e23.sjgames.com/item.html?id=DOJHERO106</a>
To be honest, you could run a game with just that. The one thing it is lacking compared to the larger rulebook is lots of examples of how to do various stuff in the Hero System. It also has no genre specific detail beyond a couple of sample characters (fantasy, science fiction, pulp, superhero) - it is truly generic.