Use this search in Google to show a bunch of videos on the topic.
dcs world mission editor site:youtube.com
There is a Mission Builders sub-forum at DCS --
http://forums.eagle.ru/forumdisplay.php?f=210From here ^^^ you can get a lot of specific questions answered. You can post questions in here, too; I'll try to help.
You can do a lot with the regular events logic in the Mission Editor. There are scripting solutions to more complex logic and that involves LUA code.
WC