Hello guys, I am new to develop using sitecore and have a question
I saw in some tutorial website there is addition links next to the field name, like [Go to field] [Reset Field] [Go to datasource]
Is this required some modules or settings
This can be added by a browser extension: See Sitecore Extensions on GitHub github.com/.../sc_ext There is also a Downloads section.
What you see in the picture is the Field-Inspector see here for information and a nice gif demo https://github.com/alan-null/sc_ext/wiki/Field-Inspector
The Sitecore Extensions contain more features see Sitecore Extensions Wiki
If you want there your own help text or help link to make it more user user-friendly for the CMS editors, you can fill in the help fields of the Field. See http://www.stockpick.nl/english/user-friendly-developing/