You really don't need an expensive NLE to start with. Even for people who owned the high end NLE won't necessary produce an interesting footage. It boils down to contents. First thing, are you using a DSLR or an HD camcorder. Once you are familiar with the interface, you can then start using creativity. There are many inexpensive NLE that may fit your budget. Second thing to look for is what is the output format of your choice, i.e., youtube/vimeo or DVD/Bluray.