dear people of the webs. I wish to start building off of/changing my pc. I have an MSI gaming dragon laptop, and I want to customize my pc. why? I hear about all of you guys' builds, and wish to start a hobby because I have none. I know the following facts. this is my pc purchase link(have no other, had to look it up.) http://www.msi.com/gaming-iframe/nb/GE70-2PL-Apache.html#hero-overview I have an octo-core, and I have nvida graphics driver. any way to become a computer building hobbyist without buying a new one?(also I have some]5[ REALLY old, like, 2005 old computers that I MIGHT be able to convince my dad to let me upgrade) if I need a new computer, how much can I get off of the ones I currently have? And, with a budget of 4.75 dolors at the moment, what would you recommend to a noob(I have no Idea how to do pc stuff) and what operating system is good?