Totalwireframe is now free for everyone.
You can become an expert with Axure in two days. It's not that hard to learn.
Learn the basics of Axure. Discover the default User Interface, how to use most of the options Axure provides and more. All the courses at this level are completely free.
Get ready to enhance your skins considerably. Libraries and Masters will help you speed up your wireframing process. Dynamic panels are widgets that will make your wireframes be interactive.