I am a bit late to the party, but I am enthusiastic about blockchain's use cases in various fields. I taught myself the basic concepts behind blockchain and how to write smart contracts this month. My goal for 2018 is to strengthen my knowledge about Ethereum blockchain, learn more about Solidity language and get better at writing Smart Contracts.
If anyone is interested do check out some of my side projects & writings involving blockchain. I built/wrote these this month.
Building your own Ethereum based ERC20 Token and launching an ICO
Send Ethers this new year (this can be significantly improved)