Investing in Mutual Funds

So I have been toying with the idea of actually investing a substantial amount in the stock market. After much reading and searching I decided to go the mutual funds way. I have a 401(K) at work and last year (2006) I had a YTD return of about 16% not bad! SO why not use the same strategy with some of my personal money. I opened an account with Vanguard and invested in VTSMX with the minimum investment of $3,000. I will be contributing $200 a month to this account. I am looking into investing in other funds as well.

Investing is a risky business so beware. More to follow on this topic.