Resources - Books and Magazines
Books.
Technical & optics
"Telescope Optics" by Harrie G. J. Rutten, Martin A. M. Van Venrooij The ultimate guide to telescope optics and design.
"Star Testing Astronomical Telescopes: A Manual for Optical Evaluation and Adjustment" by Harold Richard Suiter The ultimate guide to star testing your telescope. Very comprehensive, but also good read.
"Stargazer: The Life And Times of the Telescope" by Fred Watson A good book about the history of Telescope, focusing on the early days, before the second part of 20th century. A good companion book to "An Acre of Glass" (below).
"An Acre of Glass: A History and Forecast of the Telescope" by J. B. Zirker An excellent book about the modern history of Telescope, focused mostly on the 2nd part of 20th century. A good companion book to "Stargazer" (above).