That'll be coverded by http://imgur.com/vEp4z6F,2CjHW1m
then by and large.
Do note that size[x] and time[x] are linked, so to use that one as an example, it starts at .4 size, halfway through the lifetime of a given particle it's at 1.2, and at the end it's about 1.7. Given it's time-based, variance in life time will put that at different sizes, though obviously, longer lasting particles will spread further out.
Spin min/max sets it up the parameters of the initial random distribution.
Liferandom for the *emitter* will give variance on the overarching particle system, not the individual ones.
Amount and amount random it should be noted are *frequency* settings, so lower = more spam.