You can download here the Google SEO Starter Guide
Vision in Motion advise you these remarquable seo tools:
Moz SEO Tools [Open Site Explorer] - Moz offers a huge selection of professional research tools - https://moz.com/
Semrush - Semrush is a big tool to find the best keywords and online marketing ideas - http://www.semrush.com
Ahrefs - When you need a backlink research, a link data for link audits or a social media suite ahrefs is extremely powerful tool - https://ahrefs.com/
Google Adwords keyword planner - keywords suggestion tool by Google Adwords, you can compare and analyse keywords for your project - https://www.google.com/adwords/
Woorank - powerful tool that analyse pagerank, backlinks, keyword analysis - https://www.woorank.com