I have used www.freeprivacypolicy.com for this website, and I would recommend that site for yours if you’re after a free and simple one. It takes about 10 minutes to answer the questions, retrieve the policy they generated for you, copy and paste it into a word doc, and then add it as a media file and place a link to that file in a footer widget or somewhere similar. Your link to it should have the word ‘privacy’ in it, and should be easily accessible from the first page people land on when they navigate to your site.
Here is a good post from the WordPress forum for adding media link in HTML. You will need this advice if you put it in a footer widget, like I did on this site.