Thanks Andrea for the prompt response!but honestly wikipedia is too vast...I was looking for something that can help me decide fast.In the meantime I came across something useful while surfing (googling actually) and it sounds pretty convincing too....I am sharing the same:
Both open source and closed source software are far from perfect. If you are new to computers then closed source software is probably for you, as the cost of training and getting yourself competent will exceed getting the cost of buying easier to use software. The support offered by closed source companies tends to be better than its open source competitors. There are companies that offer paid support for open source software.
On the other hand, open source software is catching up quickly with its closed source counterparts. Some versions or distributions of Linux can be installed completely without having to touch a keyboard and projects are currently running to improve the documentation available for open source software. Also as overall computer literacy improves as computers become more pervasive, open source software will become more appealing.
The abilities and friendliness of open and closed source software are merging, and the real showdown will happen in five to ten years when the only real difference between the two classes will be the cost.