Now click on "show viewport".
and you should see something like this.
Now click on "self shadow".
and make a test render(now my max crashed for the first time).
Next step we will create some variations in the smoke look
Move down to Particle Shape/Animation parameter
Set the following settings: under low value set 0,8, then right click on afc and enable it, and finally under Hi value set 30.
then click on the afc and change the curve to that.
Now get down to the Noise Animation Parameter and set the Noise Level to 8 and the noise size to 1
To the noise size
Right click on afc and enable it, than insert a value of 10-12 in the High value field.
Now its time to set the falloff type to cubic.