Lined Books : Searching Method

At the end of last semester I started working within a small book "Historical View of the Literature of South of Europe" connecting different words with straight thin lines. The relationship between each word is still blurry to me but seem to be related to my own emotional aesthetics and the subject of the page. I have started another book "Elementary Mathematical Analysis" that has become more difficult because of the lack of emotion compared to the first book. I have however discovered that there are different meanings for certain words when I say them out loud.

I still need to find books on phonetics.