Here is a YouTube video about The Dwingeloo radio telescope goes SDR, and is part of a growing collection of videos I have found to be useful. The reason is improved signal detection and analysis with SDR and understanding science related to software defined radio.
This tutorial, "The Dwingeloo radio telescope goes SDR" is free education you can watch, which will help you deepen your knowledge and be better prepared for licence exams, schoolwork, or operating radio equipment.