Here are the fifth and sixth reading challenges I am considering.
To read more about a challenge, just click on the image and you will be taken to the originating website.
This one is to choose a minimum of three themes to read up on, with an increasing number of books in each level, plus a couple of other rules. I'm thinking that it could be combined with the mythology challenge I mentioned in my last post in this series.
I could participate in this one, where the originating blogger has already decided which 6 themes will be used: