Add more technical concepts by Andrew Westberg (#878)

* Add more technical concepts by Andrew Westberg

* given a properly sequential CPS number in meantime

See cardano-foundation/CIPs#374.

Co-authored-by: fill-the-fill <fill.ickevics@gmail.com>
Co-authored-by: Robert Phair <rphair@cosd.com>

docs/get-started/technical-concepts.md

@@ -125,4 +125,8 @@ Learn about how Genesis Keys work on cardano and how they are delegated.
 
  ##  Music NFTs
 Learn and dive into CIP-60 which is the Music NFT metadata standard on Cardano.
-<iframe width="100%" height="325" src="https://www.youtube.com/embed/EolfBVq9y3A" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture fullscreen"></iframe>
+<iframe width="100%" height="325" src="https://www.youtube.com/embed/EolfBVq9y3A" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture fullscreen"></iframe>
+
+ ##  Pointer Addresses
+Learn and dive into CPS-0002 which focuses on Pointer Addresses.
+<iframe width="100%" height="325" src="https://www.youtube.com/embed/XKgmP1r_GSA" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture fullscreen"></iframe>