are you looking for a quick buck, or longterm investment. That info would help.
imo it is best to diversify. Take up to 20% of your investment money and put it into stocks. Lets make up a number of 100k of money to invest. So 20k is going into stocks. I would use about 1/2 of that or 10k and spread it out over several different mutual funds. That leaves you with about 10k to invest into individual stock.
Now if you are looking for the quick buck and short term investment, yes go after the .25 up to a couple dollar stocks. These are usually stocks you invest in from a couple days, up to a couple months. If you buy it a thousand shares at a dollar a stock, and it goes up .25 over a couple weeks, dump it, take the 1250, and turn around and find another stock to invest in. These stocks are usually move quite a bit, as .25cents is 25% increase/decrease. You might loose everything, you may make 100% or more increase, but you need to watch there value as well as company statements.
Places to look for info are the wall street journal, cnbc, every major news channel has a money show. On Fox, I like Neil cavato during the week, and then they have a couple shows on the weekend that is very good. There is no place that will tell you how to invest, as the stock market can change very quickly.
International investing is solid right now. With the globilization of the markets, third world countries are getting a lot of jobs/investment opportunities on the cheap. Contact a stock broker, they will send you whatever they are pitching and give you a prospectus sheet. Look it over when you get, if you don't understand something, call the broker. Make sure you explain to him what you are looking for.