TallAdam85, allow me to say a bit more on this subject.
So, let's assume you're a young man with a bit of extra disposable cash each week, not much, but a bit. I am not a financial planner; just a guy who has made a bunch of money mistakes; some more than once. And I listen to a lot of people who are supposed to be smarter than me.
First recommendation I would make, is please, pay off any credit cards you have every month in full. It is so easy to get yourself buried in credit card debt and so difficult to get out from under it. I promise, you will sleep better at night not carrying this burden.
If you have credit card debt that you are carrying. Please set a plan to pay them off now. Start with the smallest outstanding balance and pay everything you can on it (while still paying minimums on the others) until the balance is zero. Then cancel the account.
After you are credit card debt free, look to build an emergency reserve for unexpected events. This should be a minimum of three months living expenses. Have this reserve in 'liquid' account; a money market or savings account. Please do not have it in certificates of deposit, or any other instrument that has a holding perior which might prevent access to it in an instant. This emergency reserve is should be for emergencies; you got laid off, but you still need to pay rent. Your car needs a major repair. Your house needs to have a new roof.
After you have no credit card debt, and you have a cash emergency reserve, then you should be looking toward your own well being in the future. If your employer has a defined contribution plan (401k), contribute to the point equalling your employers match at a minimum. I usually see an employer match of up to half of your contribution, up to 5 or 6 percent of your annual income. DO IT! This is the second best thing you can do to your future financial security. (The first being paying off your credit cards).
Once you reach the employer match ... look at planning to put $4,000.00 per year into a ROTH IRA. Although, honestly, this is a difficult suggestion without knowing more specifics about your financial life. ROTH contributions are made with 'after tax dollars', but grow and are distrubuted tax free. With a long time horizon, this combination is exceedingly powerful.
As you are half my age, you have distinct advantage in your person financial life ... you have a much better shot of getting rich than I. Just remember, you get rich slow; with disciplined investing and time.
OK ... so now, you have no credit card debt: you have an emergency cash reserve: you are contributing to your 401(k) / 403(b): and you are maxxing out your ROTH IRA. At this point, I would suggest you put any more 'play money' into your 401(k) until you are contributing a total of 15% of your annual income to that vehicle.
Then, and only then, would I suggest you look to buy an individual stock - for either fun or profit. When purchasing an individual security, you should have an entrance plan and an exit plan. What triggers the purchase? At what price (above or below the original purchase) do you sell? You need to be able to read the financial documents and understand what they are saying ~ this is often damn near impossible ~ it certainly is complicated. Then, when you do start to play ~ realize you can lose everything. Just as sure as when you sit at a blackjack table in Las Vegas. Watching your money disappear is not fun; day after day watching the price tumble. Ouch!
My daughter started buying HOTT - Hot Topic stock, as a game and learning experience - in 2004. In January 2004, the stock was selling at more than $30.00 per share. Today, it is slightly lower than $11.00 per share. When half of her original investment had disappeared (Jan '06), she doubled down: doubling her investment to bring the average share price down on hopes of a rebound. Today, she is down at least 30% of her investment. And every time we look, it hurts.
Your best bet, if you choose to invest with disposable cash, is to purchase money market funds which distribute your investment across many securities. This reduces your personal risk.
Good Luck.
Get Rich Slow.
/lecture off/