You will find the following resources very useful:
- Visit the documentation page of the syscall standard Go package at https://golang.org/pkg/syscall/. This is one of the biggest Go documentation pages that I have ever seen!
- Visit the documentation page of the text/template package, which can be found at https://golang.org/pkg/text/template/.
- Similarly, go to https://golang.org/pkg/html/template/ for the documentation of the html/template package.
- Visit the home page of SQLite3 at https://www.sqlite.org/.
- Watch the Writing Beautiful Packages in Go video by Mat Ryer at https://www.youtube.com/watch?v=cAWlv2SeQus.
- If you want to know about Plan 9, look at https://plan9.io/plan9/.
- Take the time to look at the find(1) command line tool by visiting its man page (man 1 find).