I am about to start a PhD (Research Based) on a full time. Can you please tell me what it the programme may entail? Can I just write a report to support my research or do I have to come up with a Product

Well - what subject are you doing?
You'll probably have to write up a thesis 80 000 words and then defend it in a viva.

PhDs are research degrees, therefore you'd be hard-pushed to find one that wasn't research based! ;o)

You do not have to produce a 'product' to obtain a PhD degree (although that might be the aim of your specific project).

The time to investigate this was before you applied to the programme!

How does a person get, or want, a PhD without even knowing what it is!!?? Unbelievable....