The guide is very helpful but I would suggest coloring coding the various screw with different colored markers so you do not get confused during reassembly. The glue tabs broke after a few seconds of lightly pulling on them. I used a hair dryer to heat up the glue and use a old best buy rewards card to slowly pry the old battery up. I also messed up the new glue when applying to the new battery so had to use double sided scotch tape to hold the battery in place. I have done a few repairs myself on my MacBook Pro and my iPod Classic, but this repair only took a total of 35 minutes. The repair was pretty easy and painless.