Reddit mentions of Elements of Gas Turbine Propulsion (AIAA Education Series)

I'm not sure if this is the book /u/IC_Pandemonium was referring to, but it might be:

The Jet Engine by Rolls-Royce

I haven't had a chance to read it yet but I have heard it is very helpful.

Some other suggestions:

Gas Turbine Theory by Saravanamuttoo

Elements of Gas Turbine Propulsion by Jack Mattingly

Jet Propulsion: A Simple Guide to the Aerodynamic and Thermodynamic Design and Performance of Jet Engines by N.A. Cumpsty
(I think this may be the book /u/IC_Pandemonium was referring to actually. The previous book I have not had a chance to go through but I believe it is supposed to be written very accessibly as well.)

Compressor Aerodynamics by Cumpsty

The Design of High-Efficiency Turbomachinery and Gas Turbines by D.G. Wilson

Hopefully one or a few of these help!