if not, there should be a way such as, "Add to Favorite" or Marks as Fav. So we can later see our favorite questions and answers.
4 Answers
you can mark a question favourite by clicking on a star. There isn't a way to favourite an answer as far as I know.
Note the star icon next to each question. That's exactly what you're asking for.
You can see all your favorites in your profile, in the "favorites" tab.
There is. Click on your name at the top of the page, then click "favorites". You'll see a list of all your questions that you've marked as favourite.
To mark a question as a favourite, however, click the star below the score.