I have started SEO on my site, used some techniques, i.e. keywords search, heading, embedded the keyword into body text, etc. I did not see a increment trends on traffic, so please someone give a direction to a good online book, instead just a few articles. thanks in advance.
Indeed - Aaron Wall's SEO Book (www.seobook.com) seems to have a pretty good reputation around here. I haven't read it myself, but from what I've seen of the guy, he knows his stuff and he updates his book often. If I'm not mistaken, he's also the creator of Threadwatch - if not, he's definitely involved.