Just get a $30 RTLSDR kit from Amazon. Plenty of easy/fun projects, only caveat is its read(listen) only. Track planes, listen to TV/Radio/watch your garage door clicker/listen to satellites/the space station/a million other things.
If you like it and want to take things further, buy a limesdr mini or bladerf or something. By then you'll feel constrained by the rtlsdr and know better what you want.
If you like it and want to take things further, buy a limesdr mini or bladerf or something. By then you'll feel constrained by the rtlsdr and know better what you want.