I have recently installed MSM on my EE build. Both are the very latest. I followed the tutorial all the way through: http://ellislab.com/expressionengine/user-guide/cp/sites/install.html
When i visit the subdomain on my local host it shows up fine in terms of the styles being there however when I make an edit to a template via the control panel/or text editor it does not show up on the subdomain. I have all my templates saved out as files. If i edit the index page for the main site, it shows up on both the main and subdomain.
my main site is located in a public_html folder on my computer and at the same level is the subdomain folder named appropriately. I am sorry my question is so high level. I bet I am just missing something obvious.
PS I have added an htaccess file to my subdomain folder with no success. This is all on apache on my local computer.