Are there guides on how to build arcade games for StarCraft 2?
Solution 1:
SC2Mapster is a site dedicated to map-making for Starcraft 2.
Their tutorials sub-forum has tons of mini-guides describing how to do various things in the map editor. Note that that sub-forum is not the appropriate place to ask questions about how to do things; for that, go to the sub-forum specifically related to the kind of thing you have a question about (triggers, terrain, UI, cinematics, etc).
Solution 2:
Blizzard has published arcade map making tutorials for people like you. Hope it will work for you.