To try and provide feedback without being critical, the way you bold text from "So What's Up?" and through "Tips and Tricks" is very distracting. Since you use bold text for titles and the list items in that "So What's Up?" section, bold text is structural and serves a purpose to separate ideas. You overload it a bit by bolding long phrases you wish to draw the reader's attention to.
You use bold text well before and after these sections, when you're only bolding a few words at most at a time. Once you start bolding whole phrases your paragraphs start looking like striped lines. It was very distracting to try to follow your sentences when my attention is getting drawn to all the bolded text around me. It almost felt wrong at times to read the plain formatted text.
Your content was very engaging and I relate to it quite a bit. The illustrations are fantastic thanks for posting.