Feature Request: Bookmark articles and if possible then in multiple lists

I am learning and brushing up my JS skills by this site only, I am learning from beginning to the end.

While reading I realized that there are some articles which I need to revisit regularly so that they are fresh in my mind, some are there which I would like to read later and some are very fabulous articles to which I would refer always when I need to understand or to explain someone the same.

So for this, I propose a feature to bookmark articles, also, if possible then in multiple lists like below:
* Favorite
* Read Later
* Important

Though only a single "Bookmark" feature will also help a lot.

We can discuss the need for such a feature here and once we are OK to have the feature we can discuss how to implement it.

The issue names no files, tests, or entry points. Start by reviewing the existing article-reading site structure and the discussion history, then define whether one bookmark or multiple lists is required. Done would require an agreed scope and implementation plan before coding begins.

Written by the indexing model from the issue text.