Considering that penny stocks are any shares that trade for less than $5, there are plenty of penny stocks on many of the major exchanges like the NYSE and the NASDAQ. There are even a few which trade for less than one dollar but still trade on these "big-board" markets. However, you will typically find most penny stocks trading at the following locations:
To be perfectly clear, knowing how to identify great businesses is more important than being able to identify cheap stocks for beginners. A great business will typically be a good long-term performer, even if you buy in at a bit of an expensive valuation. On the other hand, a bad business that you invest in at a cheap valuation will seldom work out well.
Diversification allows you to recover from the loss of your total investment (20% of your portfolio) by gains of 10% in the two best companies (25% x 40%) and 4% in the remaining two companies (10% x 40%). Even though your overall portfolio value dropped by 6% (20% loss minus 14% gain), it is considerably better than having been invested solely in company E.
A $50 stock can be more expensive than an $800 stock because the share price means nothing on its own. The relationship of price-to-earnings and net assets is what determines if a stock is over- or under-valued. Companies can keep prices artificially high by never conducting a stock split, yet without having the underlying foundational support. Make no assumptions based on price alone.
Now I know GE has been a dog for the last couple of years, shares are down 60% since the 2016 high. But management has made the tough decisions, selling off some assets and spinning off others. Cash flow is protected and I don’t think the market is giving the company credit for it yet. I think a solid turnaround in stock price could start in 2020 with even more gains over the next five years.
Work-based retirement plans deduct your contributions from your paycheck before taxes are calculated, which will make the contribution even less painful. Once you're comfortable with a one percent contribution, maybe you can increase it as you get annual raises. You won't likely miss the additional contributions. If you have a 401(k) retirement account at work, you may already be investing in your future with allocations to mutual funds and even your own company's stock.
Should the company management and majority owners choose, they can pay one or more dividends per year to stockholders. The money for these dividends will typically come from profits earned within the business. In most countries, these dividends are subject to income tax payable by the receiver. Often there is a withholding tax taken at source to ensure that non-resident shareholders pay as well. 
Over the long run, value stocks outperform growth, so look for stocks trading at relatively cheap valuations based on price-to-earnings ratio (P/E), price-to-sales ratio (P/S), and price-to-free-cash-flow ratio (P/FCF). It is vital not to chase opportunities, but rather wait for them because patience always pays. Solid fundamentals and a large moat (barrier to entry) are also vital for long-term sustained success. Also, use technical analysis and charting to better help pinpoint both the entry and exit points for the stock under consideration—both for a target profit area and a stop loss.
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Assess how much capital you're willing to risk on each trade. Many successful day traders risk less than 1% to 2% of their account per trade. If you have a $40,000 trading account and are willing to risk 0.5% of your capital on each trade, your maximum loss per trade is $200 (0.005 x $40,000). Set aside a surplus amount of funds you can trade with and you're prepared to lose. Remember, it may or may not happen.

How much money do I need to start investing in stocks? The amount of money you need to buy an individual stock depends on how expensive the shares are. (Share prices can range from just a few dollars to a few thousand dollars.) If you want mutual funds and have a small budget, an exchange-traded fund (ETF) may be your best bet. Mutual funds often have minimums of $1,000 or more, but ETFs trade like a stock, which means you purchase them for a share price — in some cases, less than $100).
Bernard Baruch, known as “The Lone Wolf of Wall Street,” owned his own seat on the New York Stock Exchange by age 30 and became of the country’s best known financiers by 1910. Mr. Baruch, while a master of his profession, had no illusions about the difficulties of successful stock market investing, saying, “The main purpose of the stock market is to make fools of as many men as possible.” According to Ken Little, author of 15 books on investing and personal finance topics, “If you are an individual investor in the stock market, you should know that the system stacks the deck in its favor.”