I use a mix of pegs and locations. I sometimes use my pegs for programming information, since I have a lot of pre-made pegs from my 000-999 number system. Even if I let the facts fade from the pegs afterwards it still helps me.
I like your approach with the os package.
Are you using a specific Go book to learn from? I looked around and many of them seem to be from at least 4-5 years ago, so I’m not sure if they are current.
Sorry about that. Are you using underscores? If you surround text with underscores it will make the text italic. Example:
_italic_
There is more information here — the formatting system uses markdown: How to format text in the forum