I'd say: just give it time, you know. I found - sorry, I still find! - Polish spelling terribly difficult. But lately I've noticed that it's becoming a bit easier of its own accord. The more words I learn, the better I'm able to recognize roots (and the easier it gets when it comes to remembering vocabulary). And I should think that it'll be the same for you: after all, there are lots of German words that are made up of - e.g. - preposition/prefix + root of verb + ending/suffix, meaning that by the time you have some grasp of the prepositions/prefixes and endings/suffixes and have seen the more common verbs often enough, spelling won't be such a problem anymore. Plus, at least compared to English, German spelling is a bit more phonetic, isn't it? Which also means that as you come to grips with German pronunciation, spelling will become a bit easier. :)