These guides are very good and if you have any mechanical skill at all you can do this. Just make sure you have the tools required at the beginning of the guide. Find a quite spot to work without distractions. Have good light. Try to do it all at one sitting. Touch the center screw of a wall electrical receptacle to ground yourself out to avoid ESD. If you have a digital camera, taking pictures as you go can help with reassembly. Keep organized, some people use masking tape and put the screws in order as they go. Have fun and enjoy learning a new skill and the confidence that comes with fixing something and of course the money saved. Remember we are here to help you and have many many years of experience and do this solely to help others. Most of us that answer questions are volunteers and do not work for iFixit ;-)