In chapter 07 you change the SpriteBatch.Begin() to be SpriteBatch.Begin(samplerState: SamplerState.PointClamp);. I think this is a good opportunity to tell the reader to read the documentation on it so they can become more familiar with the feature. It's also a good way for Monogame beginners to check out the documentation.
I think just a small note with a brief explanation with a link to the Class SamplerState is all that's really needed.