speedindevil

I need to replace the rear wheel bearings on my 94 explorer, but I'm wondering how difficult it will be to replace the inner bearings at the same time. I have never done this before, but I really need to get rid of that constant whine and clunking from the rear end. Can anyone give me some tips on this that maybe they have learned? Also, do I need any special tools other than the internal bearing puller and slide hammer?
Thanks for info