I am currently learning with this book. It has a very good practical and engineering oriented guide, I would recommend it!
Also the mentioned and covered hardware is cheap to get, I am currently using a RTL-SDR from nooelec and for learning the basics you have to invest like 50 euros, which is fair IMO.
This is an excellent resource. I'm not a DSP expert, but I work in the field, and this is usually the first resource I go to when I need to re-familiarize myself with some basics.
I am a dsp expert. I still find it's explanations delightful and useful perspectives. Also very good for new team members who are better at code than dsp, which is most of them.
Also the mentioned and covered hardware is cheap to get, I am currently using a RTL-SDR from nooelec and for learning the basics you have to invest like 50 euros, which is fair IMO.