At the time of writing, Stellar Cannacoin is still in its early stages, and staking helps the project.
One way of helping the project is by staking to the liquidity pool. A large liquidity pool will help attract more investors, stabilize price swings, and, in turn, help the project grow. Additonally, as bussinesses will start using Stellar Cannacoin, it's essential to have a big liquidity pool to create a stability in price swings.
Staking can be easily done through our own wallet, StashApp. Alternatively you can use another provider like Albedo.
Read more about liquidity pools and staking here