hi all, please help me understand bid/ask size movements... let's say on the ES bidsize:302 bidprice: 1185.25 asksize: 206 askprice: 1185.50 i sit here watching the bidsize slowly move down to 250,210,150,30,when it hits below 1, the price moves down an increment. if in the process of the bidsize going down, the asksize goes below 1, the askprice goes up an increment... but this doesn't happen all the time, and it doesn't seem to jive with the "last price/size" .. I see the last size in like 1-10 lots for the most part, but see the bidsize/asksize move much more rapidly.. so can someone please piece this together for me.. what is actually happening? i believe this is the first step towards understanding price action.. reading the bid/ask correctly.. so if anyone would spend a few minutes enlightening me, i would be most gracious. k.