The Hobbyist's Guide to the RTL-SDR: Really Cheap Software Defined Radio
Available for PC, Mac, smart phones, tablets or Kindle devices
A comprehensive guide to the RTL2832U RTL-SDR software defined radio by the authors of the RTL-SDR Blog. The RTL-SDR is a super cheap software defined radio that grew from hacked DVB-T TV dongles.
This book is about tips and tutorials that show you how to get the most out of your RTL-SDR dongle. Most projects described in this book are also compatible with other wideband SDRs like the HackRF, Airspy, LimeSDR and SDRplay.