I agree with a lot that has been said. Utilising Condor prior to taking up gliding for real also shortened the length of time it took me to fly solo. What it didn't teach me was the correct way to do things. Now I know the correct procedures to follow I ensure I do these in Condor to the best of my ability, i.e. proper circuits, speed management, all checks (CBSIFTCBE, HASSLL, TUF, WULF, WSSSSO etc just so they become ingrained). I still go to fly every week as long as the weather allows me however as currently I'm working towards my Bronze so I need experience. I passed my theory a few weeks ago so now I just need to up my solo flights and fly my Bronze skills test.
I then have to work on the XC element. This is what I have been using Condor for recently. I plot a route on my chart flying out from my club and then fly the route with no PDA and turn points to show at 2nm. I am lucky that the South UK scenery is detailed enough to pick out what I need to to ensure I stay on route. I stick to the altitude restrictions as per my chart and avoid any areas I should. I'm now feeling a lot more confident about flying and using a chart at the same time. I do need to trust my maths a little more when it comes to calculating for a safe final glide. Today's flight saw me flying over the finish point with way too much extra altitude. I'd done the calcs and they said I'd make it and I should have trusted them rather than grabbing a bit more height at the next thermal. That said I know I will er on the safe side on my first XC anyway.
One thing that would be useful in Condor is if you could alter your altimeter whilst flying. I've now set mine to QNH in settings. Maybe that'll be a feature of Condor 2? EDIT: I just took a look at the key assignments out of curiosity......The function is there, now I know!
I also use Condor for practising my ridge flying as down in South UK by my airfield there are no ridges that are accessible to me at the moment. I also experiment with thermal centering techniques and at the moment can't say I have one perfected. I manage to centre but I'm sure I could do it quicker. I think it'll help a little though in real life you have added sensation which I am hoping aids centering further.
As someone mentioned the thing I find myself not doing is frequent lookout. I do when flying for real but don't want that to drop off through use of Condor. I've started trying to use my mouse to look around as that is more fluent than the hat switch. It's quicker for example when reversing a turn and wanting to check in the opposite direction quickly.