some nice shares on here
fiverr – of course but look hard, good for logo design as well as some video creation
backlinkwatch.com – check backlinks
ahrefs – as above
googleguide.com – great for search operators and using the most out of big G search
wordpress plugins:
simple URLS
rich snippet schema.org
Yoast for SEO
various forums, such as this and others
keep them coming!