How to add a tag to my favourite tag list. I could search for a tag but don't know how to add that to my favourite tag list.
Go to the home page of Stackoverflow, see the right side you can see the link to add favorite tags like below
On clicking that link, you can type your favorite tag and hit
On the homepage or the questions lists page, click on
Add a favorite tag link in the sidebar:
If you already have favorite tags, see the answer by Richard.