Making MBP into a desktop

Hi there! Is it possible to make the MBP into a desktop? I wish to make my MBP into a desktop; that is, to set it up and use it as a desktop. I don’t have any idea on what should I about it and what will I need how to make it work. Currently, I have a “magic mouse” and I plan to purchase external keyboard and external monitor. I wish to have my MBP sit on the stand shut with me and at the same time I will be working on the external monitor. Is this possible? What do I need to purchase to connect the MBP to the external hardware? How would I set this up with the best brand of external monitor? Do I need to buy MAC Mini to run two (2) monitors consecutively? I really wish to work with my MBP and the external monitor, working at the same time, doing different thing with various programs and applications. Is that possible? Thank you so much!
