Hi!
I think you could find quite a lot of stuff to learn here: http://www.bbc.co.uk/languages/german/ ... you could have a glance on the the "cool german" section particularily ;) As an up-to-date-language dictionary i would suggest http://dict.leo.org.
I think, the purist thing is a matter of oppinion, and in my oppinion every language is changing over and over again and i believe that there have been purists in every degree for every language and for each of its "ages". Some time ago, people may have refused to use roman and greek borrowed words like "Information", today some people don't want to use english words even if they are proven more flexible, shorter and easier to pronounce and better understood even by german people, but none of them could get the idea of learning ancient germanic and rune writing for prusims sake :). Some people today insist on using the word "Zwischennetz" instead of "Internet", and "Kurzmitteilung" for "SMS". At this point, the english word existed before the german word and I can't see any point in inventing a new longer and more complicated german word instead of just using the germanized english word. And as "Information" and "Auskunft" or "Konversation" and "Gespräch" are less the same than "Information(en)" and "information" or "Konversation" and "conversation", I think it's just fine to use non-purist words :))
http://www.youtube.com/watch?v=vLbvffkibyY