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These are easy and fun. Just start taking it apart and you'll figure it out.
You'll need a bearing packer unless you enjoy packing by hand for some odd reason.
There pretty easy to do and cheap like 88 said above. Once you get the tire off you'll find it out pretty easy just like changing breaks. Half the stuff I know I was never taught just heard a noise or something wasn't working tore into it until I figured it out.