it took me three weeks to get used to front squats. I started out trying to use the crossed arm way of holding the bar, but that felt too uncomfortable.
I then found that the finished clean hold felt better on my shoulders, but my wrists were being stretched out a lot. I eventually got used to the weight on my shoulders and the stretching of my wrists, and I'm glad I did.
I almost gave up until I sucked up the pain and just did them. I started out with very light weight and was able to increase the load a great deal after 3 weeks.
I may have been able to get better workouts for the first couple of weeks, but I feel that learning to front squat has been one of the best things I've learned to do since deadlifts.
I now plan on using front squats in most of my routines in the future as I didn't realize how much I wasn't working the quads when squatting.
I always used a wide stance and had the bar low on my back when I squatted, and I was thinking that I was getting a good quad workout but I wasn't.
If you don't feel it in your quads for the first few weeks, that's fine. Let the rest of your body get used to the excersize before worrying about how much weight you can do. It WILL pay off.