I'm thinking about learning skateboarding and stuff. Is there any skateboard club in Mac?

Look around. If there isn't one, start one. There is a board club but AFAIK it was snowboarding

There was one,... doesn't seem to be listed on the MSU website.. maybe they didn't get re-ratified, maybe try for a facebook group? I see high schoolers from time to time at the back of MUSC playing on the rails and stairs, and there's a small skate park at Sir Winston Churchhill high school at Parkdale and Main as well as an indoor one in Dundas. Hamilton City Hall also had something... not sure if it was removed or if its still under construction..