Running ethernet in new home

We're excited to be closing on our first house in several week! It's a newer build but doesn't have ethernet run so in the nearish term future I'd like to run cat5 cat6 to some key locations:

• main level for TV and a mesh wifi node
• second floor offices (PCs) and entertainment area for consoles/second TV

Any really good guides that others have followed? So far the guides I've found focus on switches and crimping cables rather than how to get a cable from Point A to Point B effectively without knocking more hole that necessary in the wall.

Edit: meant cat6, thanks for the note.