I must be lucky, I think. I'd had plenty of fun playing with MS Flight Sim before my IMC course so I knew how the radio nav stuff worked, but my FTO has a static FNPT I simulator which I could use free of charge if I had paid in advance for the whole course, so I could do as many holds &c. as I wanted to without having to pay for the aeroplane time.
Test today: wish me luck...
Tim