I do like to visit pinterest, but never sign in with my Facebook account. I always only sign in with my e-mail (as with all sites).
Whenever I've wanted to visit a site I find on Pinterest, I've only had to click on the picture and it takes me to the exact thing I'm looking for (recipe or whatever). When I want to pin something I click on the red "pin it" button in the upper left corner. I'm not very savvy at getting around on sites, but never sign into any account with FB...always use my e-mail. Although I use FB a little, I find it too intrusive for my taste.