think you will find that a well structured basic course run by a professional will be interesting and entertaining and will save you so much time in terms of working out how to make a good cuppa with your machine, that yes it is well worth it.
Unless you know a few basic principles, experimenting blind will only be a source of frustration and unnecessary wasting of time. You buy a machine, you want to use it **now** to make good coffee...or I think that is how I would see it.
The emphasis however is in finding a professional rather than a charlatan to take your money and spend time with you. Student groups MUST be small, this helps with everyone getting to play "hands on" with the equipment, or nobody learns anything.
I know a good trainer in Sydney, his name is John, contact number 9531 2394.