There are many online workshops out there at different prices with different content. When I decided to offer an online option, I set out to create a structure that is similar to taking a "live" class from me. My mission is to provide an affordable class with a learning environment that resembles a live class or retreat where you are watching lots of demos, learning techniques and projects and then creating on your own.
Most of my classes are set up in a 5 week structure with a start and finish- each week is a new "lesson" which includes projects and techniques.
I have found that some people prefer to work along with the five week format when I release a new class while others will wait months until they have the time, money and the schedule to register for the class. Either way works- just know that once you are in- there is no deadline or pressure to create.