What do you mean starting? How are you so late to the Pratchett and Orwell party?? Okay, how far are you into the Pratchett? I'm all over the place because I started reading them semi out of order, tried to fix it, then resorted to just reading them whenever they were available at the local public library. Currently reading Guards, Guards, if I ever finish this required summer reading.
P.S. I went with Pimsleur's Swahili CDs, mainly because the public library had them available. It's been a good review because it's helping me recall latent Swahili and, since the language is completely phonetic, I'lll have no problem transferring what I've learned so far to paper. Though it's designed for people traveling so not all of the content is useful...