I will give you a couple of bookmarks for current OBW tutorials, but the first thing I can think of is control issues <g>
I have them ... it makes us hold the fabric too tightly and pull, rather than allowing the machine to do the work. Without pictures, it is pretty hard to see what you are really concerned about, but in the meantime, I hope you enjoy these quilting Board links. It will also give you a chance to meet some us regulars <wave>
http://www.quiltingboard.com/t-35685-1.htm
http://www.quiltingboard.com/t-35685-1.htm