When I was actively hacking my chromebook, there was tons of advice like this, and 90% of it didn't work on both arm and intel-based chromebooks, and the advice-givers never mentioned which category it worked on. Sometimes it was buried 5 paragraphs into the webpage you were sent to for downloads, sometimes not.
Has any of this changed?
Also, I tend to take with a grain of salt any comment that starts with "it's easy/simple/obvious", especially if it doesn't provide details or a link.