I probably spend more time than most on brass preparation and all the steps may not be necessary, but it works for me.
(1) decap with RCBS univeral decapping die
(2) wash brass in hot water with dishwasher detergent and rinse
(3) wash brass in Birchwood-Casey liquid case cleaner and rinse
(4) tumble brass in media separator to shake off water
(5) tumble brass in walnut media with a 50/50 mix of NuFinish and mineral spirits
Brass is now ready to be sized or for a progressive loader