Are there any tutorials on developing a simple website using Go?

There are a lot of tutorials on how to build todo-list, instagram, twitter, etc. using other languages. I can't seem to find much resources on Go (maybe because this language isn't popular?). Any help will be appreciated.

There are loads. Here's the offical tutorial on how to make a wiki.

https://golang.org/doc/articles/wiki/

Once you understand that, you may want to look at a framework, such as labstack echo:

https://echo.labstack.com/guide

These are quite simple guides, but they will get you started on routing, etc.

Take a look at this (many of those books are free)  https://github.com/dariubs/GoBooks/blob/master/README.md