I don't know. There's no widespread knowledge or reliable source indicating whether Toriyama actually reviewed the manga guides. It remains a mystery for now.
Madeline Beck is indeed fictional. Usually, such characters are invented to drive the plot and engage the audience in a made-up narrative. In this case, she exists only within the realm of fiction.
Glenn Beck Fiction refers to fictional works created by Glenn Beck. These could be novels or other fictional narratives. His works often blend elements of his political and ideological views with fictional storylines.
It's hard to say for sure. Sometimes stories like Lena Beck draw inspiration from real life but are embellished or changed for dramatic effect. You'd have to research the background and author's intentions to know for certain.
To draw manga, practice basic shapes and anatomy. For the review, note the unique aspects of the manga, like its genre-bending or innovative plot. Mention if it stands out among similar works and if it has any flaws. Conclude with a recommendation based on your overall impression.