As Eventhorizon says, its outdated but somewhat fun if you want to try. The only thing is its hard to move around the arena whilst spinning - and people tend to either avoid you or hit you so hard its ineffective.

Realistically for a first build i wouldnt worry about spinners. Come along to live events and enter the whiteboards there. You will receive little damage and can develop the skills needed to build a full on competition robot.

Once your at that level, in the world champs you need to consider spinners. However then you have the problems as stated before.