hi pup
Dont worry about the things that you have seen in the site that scare you. They are your future and you will discover them on your journey when you are ready for them. Like most Masters there is no point in blowing you away by doing everything in the first shot.
Like most quality Master they will get a great deal of enjoyment in seeing a slave develop and grow. Because the slave is moving he cannot really see the actual progress he has made. You so often need a picture of what you used to be like, likewise a slaves diary/journey is good. Most Masters when they take on a slave you keep one eye on a slaves dick as it seldom lies, tho it can go soft thru fear - just before it gets pierced for example.
By definition a Master is looking at the long term with a slave. Likewise the best thing you can do is abandon yourself to your Master, forsaking your fears unto him.
By accepting that he can do what the fuck he likes with you, it stops the inhibitors to your slave development. You just have to trust your Master will keep you safe and develop you. So before you do that research your prospective Master some.
Then yield to the depths of your heart.