The absolute best resource I have ever come across as an entrepreneur considering starting my own business it is the Stanford University lecture series, How to Start a Startup. This is a 20 part series run by Sam Altman, the president of Y Combinator. In each video, which are 45-50 minutes long, they have a guest lecturer who was involved in the formation of a billion dollar company. Guest speakers include Paul Graham, Sam Altman, Dustin Moskovitz, Peter Thiel, Marc Andreessen, Ben Silbermann, Reid Hoffman and Brian Chesky. Each lecture depicts a different part of starting a startup, from growing users to building great products, all the way up to legal arrangements and fundraising. I personally watched the entire series start to finish and it was so informative, that I started it over again immediately. These people are serial entrepreneurs who have had repeated success and are worth learning from.
If you can commit the time to watching these (I did so during my commute), you will not regret it. Happy watching!
Link: How to Start a Startup