What is a Hackathon?
What will attending hackathons give me?
How does hackathon impact social and personal lives?
Are hackathons only for programmers?
What kinds of hackathon are there?
Which (kinds of) hackathons should/can I participate in?
Where can I find hackathons to participate in?
How do I come up with an idea in a hackathon?
How do I select my team / team members for a hackathon?
How do I pick my technology?
What if I don't do good in a hackathon?
How to throw a hackathon?

Other questions

What are the most common mistakes new hackers make at hackathons?
What are some tips/techniques/hacks hackers use in hackathons?
tips for performing best in competitive programming? (different book)
How much should I prioritize the hackathon from career perspective?
What is the future of hackathons?
Is there a hackathon for X?
Is there a hackathon for X+Y?