Here is a Nice flow chart for Sci-fi  and Fantasy &mdash; https://archive.org/details/NPRFlowchart
When you see that list, how many can you check off?

I took a speed reading class in High School, and to keep my attention, I read many of the classic Sci-Fi&rsquo;s. 
When I read the Lord of the Rings series, I quit reading for over 25 years. I felt that I had wasted a lot of time.  

Then I read Daniel Suarez&rsquo;s   Daemon, A great techno-thriller. It got me back into reading again. I read a couple more of the classics.  Then I started to read the The Silver Ships series. Stopped half way through the 5th. Got tired with the &lsquo;Savior&rsquo; character. Like Dune.