Welcome to the Village, Rich. I also have a WEN but mine is the model 3922. My only concern with the 3921 is that I believe it does not accept pinless blades. These two models look to be the same except for the light and the fact of being able to used pinless blades. My saw runs great but I've had issues with the clamp system and have already had to replace the upper blade clamp. Also, the plastic clamp screws will wear out over time. I've had mine about six months now and have made my own clamp screws to replace the ones from the factory. I've also had to replace the bellows for the blower. The original one split but I was able to make it work by gluing it until the new one came in.
The WEN is a great entry level saw but you will find you will outgrow it rather quickly. I'm already searching for a better saw and have narrowed it to two or three different brands. I've made some very nice projects with the WEN but you'll find it aggravating that your upper arm does not lift limiting you to bottom feeding only. The blower works but doesn't do a very good job. I've added a small wooden plug on the upper arm below the bellows to increase its effectiveness. WEN came out with the LL2156 about a month after I had purchased my saw. This is a much better saw and is more in the mid-range. It has a 21 inch throat, an upper arm that lifts, a larger table, a 1.6 amp motor and a much better blade clamping system.
I hope my post is not so negative that it discourages you from scrolling. As I said, the WEN 3922 is a very good entry level saw and you'll find that you really enjoy creating projects. In a couple months, let me know if my assessment is correct.
I agree with Don that you should seek out Steve Good's blog and forum. He, as well as many members of this forum, have dedicated many hours of scrolling information to assist beginner and experienced scrollers. You'll also find that the members here on the Village are more than willing to provide advice so don't hesitate to ask questions as they arise. Also, please share your work in the "Bragg" and "Work In Progress" areas.