Coinbase has added more tokens that you can earn by watching videos.
The full list of tokens at this point is:
- Zcash
- Basic Attention Token
- DAI
- EOS
- Stellar Lumens
- 0x

It is easy to watch these series of videos and they do a good job of explaining the basics of the different blockchains.
See more here: My Original Article on Coinbase Earn

As a philosophical technologist, Hari is concerned with emerging innovations and how they impact our life. Mr. Seldon spends much time separating the outstanding from the paltry and incorporating only holistic beneficial technologies into his life.