Learn English – “Learn to code” vs. “Learn coding”

I think they can be used interchangeably, there is a lot of overlap between the two, but I would usually use

• "How about" when making a suggestion that I feel is best.

• I would use "What about" when I am less set on the idea and more willing to listen to other suggestions.

"What about" can also express an objection, whereas "how about" does not.

How about going to a movie?

I would love to, but what about the kids? [meaning that we would have to arrange for their care]

See this link and this.

A memoir is a sub-genre of the autobiography. As Wikipedia writes:

A memoir (from French: mémoire/ Latin: memoria, meaning memory, or reminiscence), is a literary genre, forming a subclass of autobiography – although the terms 'memoir' and 'autobiography' are almost interchangeable.

The criteria for determining whether a work is a memoir include:

• They tend to encompass only time period of the author's life
• They tend to deal with one part of the author's life--say, his career
• They are generally written in first-person

A biography, on the other hand, is a broader category. From Wikipedia:

A biography is a detailed description or account of someone's life. More than a list of basic facts (education, work, relationships, and death), biography also portrays the subject's experience of those events. Unlike a profile or curriculum vitae (résumé), a biography presents the subject's life story, highlighting various aspects of his or her life, including intimate details of experience, and may include an analysis of the subject's personality.

Biographies tend to be about someone's entire life, although a memoir is still a type of biography. The library would shelve them together because of their shared overarching category.