CryptoZombies is an interactive code school that teaches you to write smart contracts in Solidity through building your own crypto-collectables game.
Easy way to learn solidity
only one lesson so far
Really good tutorial on building games for ethereumMatthew Kanwisher has used this product for one week.
Best way to learn Solidity by far
A bit difficult for non-developers
There's nothing like this in the market, and its freeluke has used this product for one day.