If the typographical setup is bad, no amount of lines or other art or color elements will make it better. The fonts you choose in your project sets the tone for overall feel of the piece: don't pick the first font you like; think about what voice it should have and the best way to communicate this to those who will be reading it. You can have a lot of fun with the basic well-designed fonts: Helvetica, Times Roman or Garamond, but there are tons of others than are professional looking as well. These fonts are familiar to most people to read and are available on most computers.