Martin Pring`s ``Introduction to Technical Analysis`` was a book I started with. TA started for me as an education of knowing on a chart when to get in and get out. Combined with the fundamental information, I wanted a two pronged approach in my trading. I don`t know why you would put William O`Neill on that list. He made his money on stocks breaking out of consolidations after making new highs in the early 60`s. A TA guy.
From what I`ve seen, gaps get filled. I don`t need to question why. I just want to make a reasonable amount of money in a reasonable amount of time over and over again. One of the longer ones I`ve seen, on a two year chart, is IMOS. It doesn`t stop me from owning it (fundamentals), due to the open gap, until it breaks that support line. I wish I had the time (and a gov`t grant, LOL) to stastically track gaps myself.