i'll try to post advice from a DIY'er as i learn it
i noticed (after
taking down the vynel siding) that the old window trim is rounded at the top, rather than a standard box shape in conventional windows. how to do flashing on this?
along the bottom of each wall i run a horizontal "skirt" board, for estetic reasons. but this means it must be with drip edge flashing (bought premade from HD). ok, all well & good. .. but .. my walls (after siding, insulation, lath & plaster were removed) sit almost 3" recessed! so.. you need one MONSTER piece of flashing so the water runs off the skirt board and down to the ground. they don't sell it like that. so what we have decided to do is a double drip edge. drip edge the cement lip.. then add skirt board and drip edge the top of the skirt board (as normal).
also, look at your prefered nailing pattern. this is a very important decision based mostly on width of boards, but also how dry it is, how well it is sealed and what type of wood. now, count how many nails you need! your batton nails need to be longer.
goto manufacturer websites to learn more, someone who makes board & batton in YOUR REGION because they will be harvesting wood that grows locally.
finally, have your electrical meter disconnected while you do this work. you need a permit for this ($160 !!). local utility will do it though usually for free. the inspector only works on certain days and the utility needs TONNES of advance notice, so plan this out well because you will be without power while you work on the siding in that area!