It's not hard, but can take a while. It did for me at least, but it was probably because I was being very careful.
Look around on youtube for your particular model and you can see how it's done. You can pick up the glass on ebay or Amazon. You will need the tape as well. Make sure to try and get the yellow tape, the black tape isn't as good.
And even if you don't need it now, I recommend you pick up a bezel and tape for that as well since it'll probably get broken. But it is also possible to wait and see if you end up needing to replace it.
You are also going to need a hairdryer or heat gun.
If you have questions I can try to answer them, but the youtube videos should answer most of your questions.
The irony of the information age is that we can't necessarily trust all the information.
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