+Lustre y laqueado de muebles L-d-m-L-p
yes, you can have multiple pages along side w/ your personal. Up top where you see your name you will see a downward facing arrow. Click it and select your page you wish to manage. You must do this again to switch to your personal page. Also you will not
receive any notifications, etc. from your page unless you are switched to your page.
Google is leaving the end users all the power. A brand can not circle you until you have circled the brand first. Also if you uncircle a brand you are automatically uncircled from the brands circle(s). A brand can not join a hangout either. A brand may only start a hangout for which the end user may join. Also, according to Google's TOA brand pages can not run specials, coupons, etc. on Google+ Pages. (I think this defeats the purpose myself.)