Now its time to install the motherboard into the case, this process can be tedious unless done correctly. First place the motherboard in and align with the mounting stumps. When you have done this you can then start applying the screws, its important to place them in one by one from opposite ends of the motherboard inwards and only screw until secure. Once all of the screws are in you can then begin to tighten them using the same method. Again, make sure you dont overly tighten as you dont want any unnecessary strain on the motherboard.
Now its time to place the CPU into the socket. Just triple check that your CPU is compitable with your motherboard. When you haev done this you can relieve the latch on the motherboard, a piece of plastic should pop out that was protecting the socket. After this you should align the arrow on the CPU (or the notch) with the one on the motherboard. This is the only correct orientation to place the CPU into the socket any any other will not function correctly and will probably damage your components. The CPU shouldnt fit in any other way apart from the correct way so its important not to force anything as it should be smooth.
Time to put the RAM into the motherboard. Its extremely important to put this in before you put on the CPU cooler. Some third party CPU coolers are fairly large in size and overlap the motherboards RAM slots, this makes it impossile to get the RAM in unless the CPU cooler is removed. The RAM is a very simple piece to install and is incredibly easy to upgrade and replace. All you have to do is align the notch with the one on the mother board as demonstrated in the image below. When you've done this you can push the ram down and the two clips on either side of the RAM stick should snap onto it and lock it into place. Again this is something that isnt going to require a considerable amount of force so if its not happening dont push dont with all your might, remove the stick, check the orientation, and try again until it snaps into place with ease.