is there a similar website where it is just as easy to learn a language, in this case russian? i guess there would be problems regarding the script with a european keyboard but i guess it would be worth it buying an extra one with cyrillic letters
have you checked the incubator: http://incubator.duolingo.com/? Russian for English speakers is being worked and and should be here in a few weeks to months.
The discussion has a search function, which can help you find out more as well :-)
Edit: here is the course status http://incubator.duolingo.com/courses/ru/en/status. Don't be put of by the date - I think they are still preparing the course and once the contributors start working on it is will drop significantly.
The site mentioned by alvarojimpal covers the basics and looks very good. There are other "from scratch" site, but this looks as good as any I know of.
A few other places online to get beginner practice:
http://livemocha.com/ - this has a course of introductory lessons that appear to be okay. You can start, at least, for free, and learn the rudiments of the language. (This used to be a quite good site, especially for "language exchange" sorts of things, but since Rosetta Stone bought it, it has gone downhill, IMHO.)
http://www.lingq.com/ - this has a lot of fairly simple texts with accompanying sound files, so unless new basic materials have been added since I last looked, you don't want to try this site first. Once you know the Cyrillic alphabet and very simple elements of the language, this is a good place to get easy reading and listening practice. (The best part of this site are these texts w/ audio, and they are free. You can also pay a monthly subscription fee and have access to the flashcard facilities, etc., etc., but they are not necessary. The site is way over elaborate, chaotic, and quite buggy.)
YouTube - there are many video clips that offer introductory Russian material. Look around.
Once you can handle the alphabet and know a little simple Russian, you might try the English for Russian Speakers course on Duolingo. You probably won't be competitive in the way you are w/ English-based courses, as you won't yet know enough Russian, but it will provide some practice of the Duolingo sort. Definitely try out the Russian for English Speakers course here when it is in beta.
When you reach a more intermediate stage (can understand simple texts, and dialogues by ear, etc.) ask again, and I'll post some links for that level that have been really helpful for me.
Best of success!