You can become a self-made pro by getting your feet wet in the industry and continually learning and developing your skills.
FIND TRAINING ONLINE:
No amount of school can prepare you for what's next in motion graphics. The basics are easily learned from others who have come before you. There are enough free learning materials online for motion graphics to get you up and running. Look for tutorials from people who are well known and produce great work.
DO YOUR BEST:
Strive to be as good as the people you are learning from. Strive to be better. Look at the motion graphics work of others that is appealing to you and others - openly appreciate it - and learn the steps to produce at those levels. Exceed those levels in your own work.
TOOLS ARE SECONDARY:
After Effects is a good starting tool, and more accessible to the beginner than Nuke at this point in time. But always remember, the tools are not as important as telling the story. Work with what you have access to, and use it to tell a great story. Focus on the message, the communication. The tools are just a means to produce the visuals - focus on what you want to show and don't worry about if your tools allow you to do it or not. There's always a way to show what's needed and you can search for others who've figured it out or develop a way yourself.
Learn on a project to project basis. Don't be afraid to take on projects you don't fully know how to produce. Get yourself to the level of confidence where you can take on jobs you've never done and figure out what it will take to learn and produce an effect.