I have a l505es Toshiba laptop?

the shift critical had many hooks so it hooked on now do i can buy a new parts laptop or can one just buy the key board

you can obtain completely new keyboard (OEM)

http://shop.ebay.com/i.html_nkw=+toshiba+l505es+keyboard

in which case you can change it straightforward.you don’t have to teardown all the laptop, merely the keyboard.
abide by steps ONE, 2, A FEW, 4, FIVE, 6 during this guide

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-L505-L505D/remove-laptop-motherboard-1.htm
next do 6, 5, FIVE, 3, 2, 1!!

good luck.