Sweet!
I am working towards having a passive income of 500k plus before I hit 28 and to that end I have started several small businesses. The web will get you there but don't discount the 'real' world as well.
Investing for passive income is my key strategy *after* I build a business to start pulling in $. Or hopefully $$$,$$$
One tip though, don't discount people who can help you. I just started an new company, my third, with twice the number of people that I had in my last company. The grand total is four. Luckily for me the whole company is forming around some intellectual property of mine and I am happily engaged in every aspect of the business, from market research to design and implementation. I have some great resources in my partners and while I only own 30% of the company I am happy with my share because I am making progress sooooo much faster than if I did it on my own.