Although this only applies to about 30% of Civic owners, I thought I would post this seeing as most of the same principles apply to front and rear calipers.
Step 1 - Park car in gear, release handbrake (changing rear pads only), loosen wheel nuts, jack car and place axel stand as appropriate.

Step 2 - Remove spray gaurd covering caliper (rear brakes only) with a 10mm socket:

Step 3 - Remove top and bottom bolts with 12mm socket, removing bolts completely for greasing.

Step 4 - Seperate slider and rubber seal from the piston housing and clean. Then apply copperslip or other recommended lubricant.
