Well, the best thing is to just mess around a bit. Try every trigger a couple of times and just try something out.
Here are all Actions listed:
http://www.staredit.net/index.php?tutorial=23And here you got Conditions:
http://www.staredit.net/index.php?tutorial=75Here you got a nice Tuturial about switches (which are very useful):
http://www.staredit.net/index.php?tutorial=116Note that all of these links go to theTuturial secion (
http://www.staredit.net/?act=tutorialshttp://www.staredit.net/?act=tutorials) which is THE place to go when you got a
specific question.
Just to help you out a bit I'll give you a short tutorial about how triggers work.
Condition: Every trigger must have at least 1 condition. Starcraft will constanly check if these conditions are met, if they are 'true'. When they are met/true then the actions will be fired. An example of a condition is: 'Player1' brings at least 1 'Marine' to 'Location1'. Note that once a trigger has fired it will not fire again
unless have a specific action called "preserve trigger". That action will cause that every time when your conditions are met the trigger will fire again.
Action: An action are the things which will happen once the conditions are met. An example action is: Kill 1 'Marine' at 'Location2'.
Locations: Locations can be made by switching to the Location Layer (I'm sure you can find it). Locations are very important and a lot of conditions and actions require you to input a location. You can also use the 'anywhere' location, but you need to make new locations yourself when you want something to happen at a specific place.
I hope this has helped you a bit. Remember, the best way to learn is just to try everything. Just mess around with triggers, switches, locations, units and you'll be a real map maker in no time

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Good luck

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