Here are some free tools you may find useful.
Audacity is a great free audio editor. You can also use it to create mp3 files to use on this site. To get Audacity to turn .wav files into .mp3 files CLICK HERE
Reaper is "a complete multitrack audio and MIDI recording, editing, processing, mixing, and mastering environment", it is not free but it is pretty cheap and has a great free trial. It is one of the most widely recommended pieces of software in the music community.
Power Tab Editor is a free tab editor that is really powerful and easy to use. You can also use it to create musical notation and it automatically turns tabs into musical notation. Power Tab Editor has tons of features.