You should be able to find detailed instructions in most any service manual.
There is not much to it though. Remove the calipers, use compressed air to blow out the pistons and DON'T get your fingers where the piston can be hit. Once the pistons are out, carefully clean bores, pistons and grooves without abrasives or scratching. Put your new seals in place in the bores, coat them, the bores and pistons with brake fluid and push the piston in carefully without folding the seals. There will als be some outer dust seals to install.
Reinstall calipers and bleed.