Ok, I'm new to this as well and LOVE it. I just found this website a few weeks ago!
My budget for October is $350 (which includes groceries, cleaning/paper products, pullups/wipes). It is my husband, myself, 3 year old son and a newborn to join us any day now (I am due Saturday, 10/11).
In September our budget was $400 and I spent $439.58. August it was $400 as well and I spent $424.04
This month I did try to break out our budget as follows to make up the $350 to really track our spending and also cut it down some since I am out on maternity leave...

$300 groceries
$50 cleaning/paper products/diapers/wipes
Currently I've spent:
$49.18 - WalMart
$23.67 - Aldi
$25.16 - Aldi
$30.14 - Kmart (paper, cleaning, diapers for month) - super saver month!
Budget = $350
Left for October = $221.85