Gold appreciates better than any steady CD's or anything like that nowadays, so I would recommend investing a serious amount in a few precious metals. Think of it as your bank-free, tax-free savings account. When you're ready, you can liquidate the precious metals for much more than you got them for, and you have paperwork to explain it. Keep in mind this would only work on the long-term, and there is the negative that you would have to liquidate the gold to get the money back, which is easier said than done.
I don't know why so many people here are afraid of taxation. I find it interesting that the same people rallying for legalization are in here acting as if it is some crime for the government to take their cut of people's illegal activities. Hell, if it weren't for the government, there would be no prohibition, and this stuff we grow would be value-less. Show some gratitude!
On a more serious note, I am very interested in home investment, particularly fixing up foreclosures for rental, within the next two years. Can anyone recommend literature or something that would help me figure out how to spot out a workable foreclosure, and how to fix houses up? It's harder to find on Google than I would have imagined.