They suck. I’ve been trying to wrap my head around this whole system, and people have told me that you need to edit .gcf files, which I can’t even find, and you need to have an info_particle_system, and so on. So far what I’ve done is follow this tutorial as far as I could (I’m trying to make a water droplet effect so my properties are a little different), and I’m using the in-game particle editor thing (which is quite neat).
Now my problem is this: How the hell do I a) place the actual effect where I want to, and b) change its properties such as how fast it falls and how often?