Not from a CS background originally, became interested in everything programming related since mid-2013. The stack I would really like to know better is based on Javascript:

• Front-end: moved away from AngularJS to adopt MithrilJS (check http://lhorie.github.io/mithril/)
• Back-end: NodeJs, still have troubles with callbacks but getting there, love the concept of streams, use of SequelizeJS as an ORM (can connect to Postgres, MS SQL, MySQL, MariaDB etc...)
• Database: Postgresql beginner, interested in the potential of Plv8js, hstore, arrays, json, jsonb in the database

Likes the idea of Javascript everywhere: front, back and database.