* Added Books for Go, Added interactive tutorials

Added Go succintly which is freely available on the mentioned website.

Added Go Web Development Succintly which is freely available on the
mentioned website.

Added interactive tutorial websites learn-golang.org, learn-html.org,
learnsqlonline.org

* Added suggested changes

* Added Expos Guide in books for Operating Systems

* Added more details on expos
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>