Not sure what you mean by priming, but here's my tried and tested
method for getting the best out of the machine:
1. Froth or steam the milk first - I know it doesn't say to do this
in the manual, but this way, the coffee doesn't oxidise between the
time you make it and the time the milk is ready.
2. After steaming the milk, release the pressure in the same way you
would clean the steam nozzel.
3. Now grind the coffee and use a tamp to press it in slightly.
Again, I know the manual says not to do this, but you get a better
crema this way. The trap to watch out for here is to press it down
too firmly. If you do this, the machine will have insufficient
pressure to force the water through - a little experimentation with
pressure is required here.
4. Use preheated cups.
By the way, if all you're really asking is "how do I get the water
flowing through the machine - the answer is to just turn the knob on
the side with the power turned on and let the water flow through the