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KeywordTool.io - KeywordTool.io is the best FREE alternative to Google Keyword Planner and Ubersuggest. It uses Google's autocomplete feature to get over 750+ long-tail keywords for any given query.
Bloc.io - Learn to code and become a web developer in Ruby on Rails, HTML, CSS, Javascript, and jQuery in Bloc's Intense Online Web Development Apprenticeship.
Google Trends - Explore Google trending search topics with Google Trends.
GoSkills - GoSkills offers bite-sized business courses.
Keywords Everywhere - Free browser add-on for keyword volume, CPC & competition