Coming from Motion 4 and a NewBee with AE, I haven't been able to discern if AE 6 includes the ability to use particles within the included effects.
Nothing that I search for containing the word particles produces a response.
If it is a matter of differing nomenclature, please enlighten me. I have not yet learned Adobe Speak.
Thanks for any light you can shine on this request,
Yes, AE has a couple of stock particle effects such as Particle Playground, CC Particle Systems, CC Particle World and others. Most of them can be found in teh Simulate effects category.
I didn't look there.
Foam is another good particle effect. Each particle effect has its strong points.
If you're new to AE, I highly recommend starting here. It'll get you a good foundation that will help eliminate a lot of frustration.