Diversification is always important (just don't tell Mark Cuban that

). Let me remind you of one other thing where I'm sure your investment advisor is also aware: With the oil royalty trusts, not only is it a monthly distribution without regard to growth, but it is also taxed differently. Here's the trick, though, to take real advantage: Only own it for a couple of years, and then sell it. Wait the 30 days to avoid a wash sale, and then buy it back. It's a nice little loophole, especially if you can go back and forth between two of them. I'm currently long ROYT and CRT at about 5:2, but am looking to replace CRT with something else, since the nat gas portion of the properties is killing me.
I'm glad to read that you're taking charge of your bucks. I'm sure many of us will help to give you good advice as well. One thing to remember about stock market investing is that it is not a science; it is an art. Just like sports, there are many different ways to reach your end goals. Like you've probably read, people have different opinions about diversification, dividends, specific sectors (or even specific stocks) to invest, types of assets, the list never ends. As with anything else in life, use what you learn as a basis and apply it to a specific strategy, but be sure that it is completely your own. The only reason I say this is because if you try to copy someone else's strategy, you may miss something important that could be the key between making a bundle and losing your shirt.