I never ventured into SEO until about two weeks ago. I paid somebody to optimize my entire site (on-page) because I knew that I would make an error. After that, I purchased some SEO gigs (backlinks, linkwheels, high pr/gov/edu links, social signals/bookmarking, etc). I have never attempted to rank for any keywords before this. My website contains a variety of keywords that I am now ranking for. I'm ranking around 40-60 in google SERPS for 12 keywords. I have seen SERP increases every day. Is SEO this straightforward, or am I missing something? Note: my keywords do not get a significant search volume.