I think you'll find once you have figure out what each knob does and managed to digest all the jargon associated with synths, read a few tutorials etc, you will be whizzing around in no time and will be able to get very close to a sound you have in your head.
One thing I always did when I first got into synths was actually read the manual for the synth in question, sounds obvious but you can learn a lot from that. Then reverse engineer patches, or tweak things to get a feel of what they do.
I'm sure the links provided have plenty of info for you to be getting on with, but besides that, just google 'subtractive synthesis' as well for additional reading as well as continuing the practical stuff, you'll have it nailed in no time.