facebook surprises

I belong to Facebook.  I guess that's the right term, but I don't follow facebook posts and I very seldom respond to a post, let alone post anything of my own.  Lately though my computer has taken to showing me little pop up tips about something new that has been posted on facebook.  Often I don't even recognize the name but this evening the little info box told me that my daughter had posted a new picture so of course I looked at that. I decided to check it out on my little tablet because my laptop was open to another program.  I did and it was a great picture of her surrounded by a candy cane patterned wreath.  My daughter is the only person I know whose passport and driver's license pictures look really good so I wasn't surprised. What did surprise me was the other stuff that popped up.  There were lots of cartoons and funny pictures and poems and more, none of which were from sources I recognized.  I have to wonder how long my little Nexus tablet has been accumulating all this stuff behind my back, and why?  I'm thinking I need to learn enough about facebook to find the delete button.