Hey mates!
I've just done the lesson about NEAR on the learning rewards on coinbase.
You can do the three lesson to learn and earn 3$ on NEAR token.

What is the NEAR protocol?
Just this
NEAR is a protocol designed to offer a high-performing and secure infrastructure to support the development of scalable dApps. The NEAR protocol can manage up to 100,000 transactions per second besides offering instant block creation in a 1 second. It eliminates the limitations of the systems in competition, providing low throughout and issues related to cross-compatibility.
NEAR introduces the concept of Sharding, ...but what's this?
In this context Sharding concept means:
splitting the network’s infrastructure into several segments known as shards or nodes to manage a small fraction of the network’s transactions. The distribution of blockchain nodes instead of distributing the complete blockchain across network participants. It helps for a more efficient way to retrieve data and scale the decentralized platform.
Security
This is how NEAR handle the security:
The NEAR protocol is secure and permissionless, which is the desirable in this fields. The network’s technology consists of a new block generation scheme called ‘Doomslug.’ NEAR Protocol can be use to pay fees for storing data and processing transactions and is also used to run validator nodes on the network by staking currency tokens.
The Token
Obviously the token is called NEAR too. Keep in mind NEAR Protocol is a Proof of Stake (PoS), so you can stake your tokens and receive rewards.
Conclusions
NEAR Protocol is one of the most innovative and technically advanced protocols available in the blockchain ecosystem. NEAR Protocol is focused on developing decentralized applications (dApps) as it uses sharding technology to achieve scalability and security.
"NEAR not only a protocol, but also a simple, secure and scalable blockchain"
Regards!