I've been told watermelon is really tricky, keep me posted on how it turns out.First off, welcome to wine making. There are a lot of options here. I started with peach and watermelon. Then tried cherries, strawberries, dragon wine (raided the frozen fruit section at the store) and eventually did my first grape wine (a field blend) last year. Find a mixture that sounds good and go with it. If you don't like how turns out, figure out what you don't like, ask how to correct it and do it again.