One of the things i like more from ZEC is that Zcash utilizes this zero-knowledge proof in its core technology called zk-SNARKS
Due to its implementation of zk-SNARKS, there are two different types of Zcash addresses. T-address and Z-address. T-address means the address is transparent or public. Z-address means the address is private or hidden. The t-address works the same way with a wallet address in the bitcoin blockchain. All transactions are visible on the blockchain explorer. But, when you start utilizing the z-address, the public wont be able to observe any information except during shielding and deshielding (where partial information can be revealed due to the involvement of a t-address).
T-address and Z-address of a wallet address are interoperable. So, ZEC coins can be sent from z-address to t-address and vice versa.
ZEC is one of the coins to hold for the future same with Monero and Dash, be sure to keep some in your bag.