book ideas

When given the brief of creating my own book on an interest of mind i create a mind map of everything that I'm interested in:

Out of all the above things that i am interested in below are a select few that i am taking into consideration of making  book on:

information book on pugs
books on graphic designers
book on leeds
book of geometric drawings
book on art supplies
book about pugs

These are the are all things that i have a great interest in and I'm constantly improving and learning more about as time goes on. Although these are all good topics that i would be able to create a detailed book about, i identified that there are things that id like to research to create a book on so that when doing the research i could also improve on the given topic as i would find this interesting learning as I'm researching.
here is a mind map of things id like to learn more about and research:

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Out of the things that i identified in that above mind map i have decided that i would be more interesting in researching tips on how to be productive and time planning so i was able to take the knowledge that i have research and put it into practice as well as creating a book that would help others in the same situation as me.