Hi Butterfli19/Nancy,
I am self taught, have used quite a few machines over the last 30 years. I found this book to be very helpful.
http://tinyurl.com/jtq7z5f
I have been machine quilting since 1992 and have learned so much from other quilters,books and videos. The best advice I can give to prevent tucks in the back is to lay your backing out on a table or floor and tape it down, so that its taut; but not overly stretched. Make sure that your quilt is supported all around so that it doesn't drag when you move it as you quilt.
When you're using a walking foot and come to an area that is a bit puffy, feed that area toward the foot.
Above all relax!! Keep your shoulders down and don't tense up. This is supposed to be fun.
Sharon in Texas
Last edited by purplefiend; 01-25-2017 at 09:41 AM.