How do I view content of iPad backup in iTunes like photographs

I am very new to this. I do not use iTunes for music or movie content. I have downloaded it to my Windows based laptop to sync content from my iPad mini. Specifically I do not want to lose iMessages and of course, Photographs. My question is how can I find and transfer the pictures from my iPad camera roll in iTunes and store them in a folder in My Pictures on my laptop? iTunes does not seem very intuitive to me. When I was in the Optus shop recently the guy showed me his iTunes on his computer and he had lots of different folders, some had his photos in, I have synced but cannot see how to get to the folders to check if my photos are all there OK. Can someone please help? Please use simple English I am reasonably tech savvy but I am not of the tech savvy generation. (A baby boomer lol) Thanks much.