Here is an easy to grow mushroom. Wine Cap or Garden Giant (Stropharia rugosa annulata). Grab some wood chips according to the recommended cubic feet the spawn bag is capable of inoculating, water chips, add spawn, mix and level. You can find wood chips at compost sites and utilities. Inoculate the bed in the spring and harvest fruit late summer early fall. The following year you can pick all summer. The pic below is one I let go just to see how big it would get. I bought the spawn bag from Field and Forest.
Paul R