How to format disk and reinstall OS 10.9.2 on my MBP?

Hi,
I bought my MBP in 2012 and after more than two years of service, I am starting to feel that it is slow and bloated. As such, I would like to completely wipe the computer and start fresh. Back in my Windows days, I would simply pop the Windows CD in the computer, format the drive and install windows again.
But my MBP did not come with a CD or DVD, so I am not sure how to proceed. I am now running Max OS 10.9.2, but the computer came with 10.7.x (I think, not sure).
How would I go about doing what I want to do?
Thanks!

Install or Reinstall Mavericks or Mountain Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
OS X Mavericks- Erase and reinstall OS X
OS X Mountain Lion- Erase and reinstall OS X
OS X Lion- Erase and reinstall Mac OS X
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because it is three times faster than wireless.

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How to format disk and reinstall OS 10.9.2 on my MBP?

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