Invest in bonds on the stock market as they are a safe investment with a steady amount of profit. This could be good advice for someone who likes to use a low risk strategy.When you are considering entering the stock market with bonds, it is advisable to find out a bit more about them.Here are the 4 main bond types:-* our national government offers them* offered by corporations* government at a local or state level* governments overseasYour original investment amount is protected with these bonds, unlike normal stock market trading.So anyone just starting out with online stock market trading will feel a lot safer. So will people who are low risk investors.The 4 types are:-Treasury bonds are on the market from the United States Government Treasury.These bonds can be for a short term of three months or a long term of thirty years or any length of fiat currency time in between. Treasury Notes (T-Notes) and Treasury Bills (T-Bills) are instances of these. These are the most safe investment of the lot as they are backed by the central banks in conjunction with the U.S. Government. The downside of them though is that the return tends to be low. Another good bit is that you only have to pay taxes on the interest portion.Corporate Bonds are on offer from the Securities market.They are offered basically when a corporation wants to pass on its debt. They offer a bit better interest rate so are a medium risk investment. The risk is that the company offering them will go belly up.State or local government bonds.They work more or less the same as corporate bonds. Problems at state or local level are more frequent which makes them a bigger risk than national government bonds. There is not tax whatsoever on them.