Competition in the animation industry is intense. If you're better untrained than all the animators out there who went to school for it for four years, then yeah, you'll get into the field. I know that alot of people are not able to attend an animation college, so what I'm saying is that I can't promise you that it will be easy to get into animation. I'm saying you have to be obsessed. You have to be more dedicated than anyone else, then you can probably get yourself a good job.
Animation is a very rewarding artform.
You very well could get a good animation job, just not those illustrious top-paying big company jobs. I'm not trying to stop you from practicing animation, I just want you to know the risk. Its going to give you exercises, a work environment and tell you about what kind of time you should expect to spend weekly to get good. It's just a good book for animators in general. There's a list of more books on the book page.