Carl, I'm a professional painter and a big fan of Consumer Reports. Depending on the location, condition, and age of your home, here is what I would do: For any wood except decks: Make sure you are painting over a paint and not a solid color stain. Ok
Pressure wash clean of all dirt and mildew, or wash and clean by hand. Let dry a few days.
Scrape, sand smooth, clean it off with gas blower or wipe it down
Prime it with a good exterior oil base primer! Exterior latex primers do not work, period! Caulk where necessary with an excellent paintable acrylic or urethane caulking. And don't make a mess.
Paint 2 coats with the BEST manufacturer's BEST 100% acrylic latex paint they sell in your area. Make sure the sheen i.e flat,satin, semigloss match all their (HOA) specs. Follow all manufacturers directions and your job will last 10 years. Painting is tedious. You have to have a lot of patience. As you can read, you will visit every spot on your job 5,6,7 times. Too bad, it has to be or call a pro and don't bitch when he gives you the price. This is the gig for exterior painting. Trust me, looking back, I wish i would of listened to G'ma, taken up her offer, and gone to Ohio State for 4 years. Oh,well. Next life I'll know better! LOL