I have been doing wifi for about 7 years now and am still learning every day. I can recommend the book Certified Wireless Network Administrator . (from David D. Coleman,& David A. Westcott ) Also a lot of information can be found at Ekahau website like : (https://www.ekahau.com/resources/?jsf=jet-engine&tax=resource-types:410) and at https://wlanprofessionals.com/ you will find a lot of interesting information this is all without vendor preference and neutral information. ... View more