I am sooooooooo stuck!

I have read -knitted, ripped out and re-knitted and ripped out so often that my sock heel will be worn out before I ever get this sock completed.
I don't think I understand the concept of wrapping and sadly I do not seem to be able to recognize a wrapped stitch when I knit back on the next row.
Any wisdom out there?
Anna Marta (who is sitting here at midnight alone and unhappy)