Solving Third Layer on a Rubik's Cube

all you need is a rubik's cube to solve it

go to http://ruwix.com/the-rubiks-cube/notation/

start the yellow cross by using the following algorithm

f, r, u, r', u', r, u, r',u',f'

when you have a line get it so that the the yellow goes from left to right

finish the yellow cross with the following algorithm

f,r,u,r',u',f'

use the following algorithm and repeat until the corners are correct

l',u,r,u',l,u,r'