Hey all,I'm working on a new book for the Linux+/LPIC-1 exam. I am looking to get some feedback from everyone here

First question: I'm trying a new writing style by formatting the book as if you were reading a blog. Instead of chapters/sub-sections you would see categories/posts. Do you guys think this is an interesting approach? Would you read a book styled this way or is the standard chapter/sub-section preferred? I thought a "blog style" book would be more fun and interesting to read. Here is a sample to check out:
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Second question: Are you more inclined to by the eBook for $5 or the physical book for $15? There is a big debate in IT on whether folks still prefer physical copies of books vs their eBook counter parters...so I figured I'd ask.Thanks in advance to anyone that provides feedback