Myth #1: Only the first rank matters
Many ebooks and other resources that business owners use will place an important emphasis on the need to be at the top of search results, whether that be on Google Search, other engines, or even in places like social media. But surveys have shown that people quite often will look at other results and they will scroll down through the page. Being on top of a second page, for example, can be quite beneficial for traffic. Also, search ranking is only one part of the puzzle. Now Google places other results on the page like social recommendations and local results as well, which means there are many more avenues open to you, and being first place is no longer as crucial as it once was.
Myth #2: You can do SEO with no outside help
Doing SEO simply means that you follow a set of techniques and procedures to increase the chance that web users will go to your site. It is true that anybody can learn these techniques, and if you are a web site owner and you want to do your own SEO then you can spend the time to learn and apply those techniques. But SEO can be complex and touches many areas such as online marketing, coding, technical aspects along with PR skills. Most business owners simply do not have everything required to do a great job at SEO, and that is why so many agencies exist that offer help. A simple IT worker or online marker is often not enough if you want truly good results.