If you are are looking for the game rules:
In German language you have to look at
http://www.hans-im-glueck.de/carcassonne/carcassonne-grundspiel and look for "Regel", also for the expansions look for "Erweiterungen" or "Mini-Erweiterungen".
In English language you can look at
http://www.riograndegames.com/games.html?id=48 for the game rules.
I don't know whether there are rules in spanish nor what publisher this might be in Spain, but you should try to look at the publisher's website too.
http://www.boardgamegeek.com/boardgame/822/carcassonne is a good source for everything around the carcassonne world. There you will find files for translations of the rules - with some luck it's not only Hungarian but also in Spanish ("Files").
Also take a look at the pictures: for example this
http://www.boardgamegeek.com/image/1179463/carcassonne will show you how some of the basic game tiles look. Be sure to take the pictures in highest resolution. For the expansions go to the sites of the expansions and look on their pictures and files ...