Welcome to M.E, Levent
I would start with some of Tubal Cain's (Tom Walshaw) books on simple stationary steam engines, I've found them to be a decent introduction.
Of course, you can always post questions on here and the frequency and knowledge of the people on here makes this place a genuinely good tool to have in your arsenal, so to speak.
Michael W
Edited By Michael-w on 13/08/2017 20:45:49