Help me

I have the image of debian in my computer. It has a iso extension and I do no how can I procede to do a particion in my computer and extract this file, and so run the linux. Please help me to install because I can`t use this system more. It´s terrible! Thanks for your help... Bruno Augusto

Help me

I have the image of debian in my computer. It has a iso extension and I do no how can I procede to do a particion in my computer and extract this file, and so run the linux. Please help me to install because I can`t use this system more. It´s terrible! Thanks for your help... Bruno Augusto