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,
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.