The Google SEO guide the best place to start your SEO practice. This is the official Google guide and it provides an up to date information.
As well as up to date information the Google SEO guide have videos full with valuable and easy to implement information.
Here is a video made by Maile Ohye from Google.In this video she covers the five most common errors
she finds in SEO, and then concludes with six quick tips to make sure
you’re on the right track.For more SEO insights just go to the Official Google SEO Guide here.