Set a goal to hack IOS, where to start? Need a sensei?

Question

iOS

I set myself the goal of becoming an IOS and Android OS tester. I decided to start with the vaunted IOS, I read various articles that the system is super safe and set a goal to start with it. basic knowledge of programming, little experience in java and C#. Advise what languages ​​you need to start learning. SWIFT of course.
I would be very grateful if there are people who will take me under their wing and become my guiding star.

Answer 1

We are in the city of Emerald, we are going along a difficult road ... Start from the first.

Answer 2

iphonedevwiki.net/index.php/Reverse_Engineering_Tools