I'd like to get into clic rock but I don't know where to begin. What do you suggest?

I was reading an article on rock music from back in the day. It did a lot of name dropping and I've heard of all of the bands but I don't really know the difference between most of them. The Who, Led Zeppelin, Crosby Stills and Nash, etc. I'd love to give them all a shot.. what songs do you recommend? And are there any other bands that I ought to know about? Thank you in advance!