[Solved] Better documentation on Loops?

I'm trying to figure out For and While loops, but I just can't grasp how to apply them properly in this event system.

Example of what I want to do (building up on the Ghost Shooter tutorial):

monsterDensity = 1

Every 3000ms, run a loop:

loopcount = 0

while loopcount != monsterDensity
spawn monster at random(x,y)
loopcount += 1

[after while loop breaks]

monsterDensity += 1

[/code:27gqz4qw]

I know that's not actual code, but the logic should be sound. How can I put this into event sheets?

I'm pretty new to Construct myself, so no comment on the code, but wouldn't using a Repeat(MonsterDensity) event be easier here?

<img src="http://goonhaven.org/img/construct/monsterdensity.jpg">

I didn't notice the repeat loop, but even then I didn't know how to make sub-events. After searching for repeat and playing around a bit... it looks like I got it figured out.

This particular article with pictures was helpful as well... thanks!