Rubik's Cube is a mechanical puzzle invented in 1974 by the Hungarian sculptor and professor of architecture Ernő Rubik. Goto http://www.rubiks.com and watch video clips of Tyson Mao teaching you how to solve the cube puzzle in 8 steps.
Step 1 - Find the centre yellow sticker and verify the opposite facing centre color. In this case, it's Blue. The Rubik's Cube centre sticker on all 6 sides does not move and therefore, the objective is to find algorithm moves in various stages which would allow completion at lightning speeds. Move the middle blue stickers so that you form a cross with a yellow centre.
Step 2 - Next, we align the adjacent middle color sticker to the centre sticker on each side and in this case, it's Red (see picture on the left) and turn twice (either clockwise or anti-clockwise, it doesn't matter). Do this for remaining sides and you should have a complete Blue cross as shown on the right picture. 
Step 3 - we face the cube with the blue cross side on the bottom and look for blue stickers on the top layer facing any side like the one in the picture on your left. We then see the sticker color on its side and in this case, its Orange. Align the Orange side diagonal to the Orange centre as shown and note the side the corner is on, this case its left. Face the cube with Orange centre and we perform this move - Left anti-clockwise top anti-clockwise and left clockwise (If its right, right clockwise, top clockwise and right anti-clockwise). Move remaining corner blue stickers up to the top side layer and repeat this step until you have a completed blue face. Also, you would notice that the sides of the Blue layer is also completed.
Step 4 - Now we are going to arrange the middle centre layer. First, we look at the top layer and look for middle cubes without a yellow sticker. Here, we have one with Red on top and Green on the side as shown on the right. We align Green side to its corresponding Green centre, check if Red centre is on the left or right of the Green centre. In this case, its left so we perform this move - top anti-clockwise, left anti-clockwise, top anti-clockwise, left clockwise (if its right - top clockwise, right clockwise, top clockwise, right anti-clockwise). Repeat this step until you have completed two-thirds of the cube.
Step 5 - We now look to complete the top yellow face. First, identify two middle cube with yellow stickers and place it on the 12 and 9 o'clock position. Face cube with yellow layer on top and perform this move - front clockwise, top clockwise, right clockwise, top anti-clockwise, right anti-clockwise and front anti-clockwise. At this stage, you should have a yellow cross but luckily, we have a complete yellow face which allows us to skip step 6 & 7 (See footnote).
Step 8 - We find a side of the top layer which is complete and in this case, its Red. Move the top layer so you have a completed side. With the completed side facing the back of you and face the cube as in the picture on the right. Thus, with Orange as your front, we perform this move - front twice, top clockwise (since white is on the left), left clockwise, right anti-clockwise, front twice, left anti-clockwise, right clockwise, top clockwise and front twice.
Whoalah, you have now solved rubik's cube in under 5 minutes or less!Footnote:
Step 6 - Find a corner yellow and place it on bottom left corner. If you have no yellow corner, find one which has a yellow on its adjacent left and perform this move - right clockwise, top clockwise, right anti-clockwise, top clockwise, right clockwise, top twice and right anti-clockwise. Repeat till you have a complete yellow face on top layer.
Step 7 - At this stage, you should have one side with 2 corners of the same color, if not repeat this move till you have it. With the side with 2 corners of same color at your back, perform this move - right anti-clockwise, front clockwise, right anti-clockwise, back twice, right clockwise, front anti-clockwise, right anti-clockwise, back twice and right twice.
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