First question you'll be asking is whats the difference between PADI and SDI?
Answer: None really.

Both are governed by the same regulatory body and follow the same high standards of training. Both are internationally recognised certification organisations. With a wide range of professionally produced training materials for a multilingual world. But there are differences

On the one hand PADI the better known and probably more commercial face of diving requires individuals to own (purchase) copies of every book, for every course.

On the other hand SDI teaches you to dive and allows you to choose wether you borrow the materials, or purchase one individually or to share with your partner or family.
(Though we do think it's wise to have a copy in your library, we won't force you.)

And of course we can teach either system

So the power (of choice) is yours, we of the free thinking Sea Rovers say 'your wish is our command'. As long as you are having fun!

Check out the new to Web Online Training for both PADI and SDI.
Do your theory chilled at home then come to Bali for the wet bits.