Yeah I can help, I actually checked out the video and there's some things I can tell you.
1st the webcam is using the crop tool, if you go on effects and search crop you can drag it into your video on your timeline, after that go to your effects control, this may be placed differently (i'm using the editing work space) and on the crop section you can see a circle, click on that and drag the circle on your face and click inverse on the crop section, that way the mask is highlighting everything but the circle, after you done that you can use the slider on top,left, down to get rid of the background.
2. Some effects used might take a long time to write down so i'm just gonna put together a video, if there's any particular effects you want to see i'm more then happy to help
But if your in a hurry the guy used, Crop,Three-way Color (Color correction), Scale and position,opacity, text and he use some key frames from time to time.