It is hard to know where to start with siding. There are a ridiculous amount of different options, each with its pros and cons. And the siding you choose will have a huge impact on the look of the home, so it is something you want to choose very carefully.
Some types of siding are easier to install than others. Of you are going to get vinyl and are real handy with cutting angles and standing on ladders, then it is certainly possible to do it yourself. But many other types like brick and hardiplank are much more difficult to deal with and are better installed by a professional.
Study all the options carefully to be sure you make the right choices, as siding is a big decision that is the face of your home. Be sure it matches the style of the house and fits nicely in the neighborhood.