If you start from the edge of the quit you don't need to back stitch. However, I try to remember to shorten the stitch for about 1/4" to help secure.
If you are starting in the center of the quilt, then pull the bottom thread up and mak one stitch and then I do one back stitch. Then I weave the thread tails back into the fabric. Some tie the threads and then weave the threads etc. If you do a lot of the weaving, the Spiral needle is a good choice. It is a bit pricy but the ease of threading is to me worth the extra cost. Sometime I forget to do all this and I will put a dab of Fray-Chek on the ends to secure them.