The MIT Bootcamp Group has a wealth of introductory resources in the form of short educational videos. Here are the ones that are the most helpful to a first time founder.
Nurturing a team
How do I hire a startup team?
How to select your customer segment
Planning your career
When is it time to transition out (or leave) your startup?
Assessing career opportunities for Ph.D students
How to prototype and test your product idea?
User Experience (UX) Design
Design Methodology 101
Testing your MVP and Finding Product/Market Fit
The importance of MVP testing
Marketing and Sales
How do I get press on a tight budget?
LEADERSHIP AND CULTURE
How do I build a purpose driven business?
Intellectual Property Protection
Do entrepreneurs really need patents?
Deep dive on all things legal