Jorge...
I've never paid for anyone to teach me anything that I was capable of learning myself. Especially when it comes to animal behavior.
My first freedive was a hands on lesson in animal behavior. I made a beach entry at Diego Garcia, with my buddy. We swam out past the break to the drop off. It's a sheer face at 50 feet that drops to 4000 m. That was where I learned to freedive. My first dive down was to 25 or 35 feet. I came face to face with 2 blacktip reef sharks moseying over to have a look. 2 choices here, 1. Freak out. 2. Do nothing and watch them. I chose #2. I surfaced, they came to about 6 feet with me and went away. That was how I started diving with sharks.
It made me insatiably curious to learn THE TRUTH about these animals, and so, I read. Everything I could about posturing, gaping, body language, tendencies, etc. I went out, often alone, to dive with sharks, and observe them. (When you're in Indonesia, alone, the lack of diving buddy WILL NOT get in the way of a great diving day, or opportunity.)
If you are not yet certified, start freediving. Sharks don't like bubbles, anyways. Read. Observe, and learn on your own. No education is more powerful than one you give yourself.
Find dive buddies who share a common interest with you; sharks, and go dive with them. If you need a boat to get you on top of sharks, go hire one, and hang out with the operator to learn about them.
That's just my opinion.
