I'm just wondering if anyone who has taken this course would recommend purchasing the textbook. Thanks.

Honestly, you don't need the textbook. It's pretty self-explanatory.

I've had padden for 3EE3 and she tends to test facts from the textbook that are not in her slides. So might as well pick up the textbook if it could net you a higher mark. Not a bad investment that you can usually sell later and get most of your money back.