How do i set up registration for multiple workshops?
You can setup workshops as price fields within a price set. Setup the field with your choices, make the price $0 &amp; uncheck the 'Display amount' box. They will show up as line items on the registrant's receipt at $0 cost.

Another option is to make them custom fields for participants and add them to a profile. 

I find reporting is more is more robust when you use fields in a price set.

Hope this helps.