Ahh, the free Field & Stream magazine subscription offer. The publication where I go “oooh, that looks nice” from the comfort of my couch. Which is located in the middle of a concrete jungle. I couldn't even tell you how to find the nearest field or stream to my house.
As soon as you submit your address, you're finished. The next page will show you a bunch of offers you can safely ignore by pressing the yellow “Continue” button without checking any of the boxes. You should then get a confirmation message letting you know how many weeks until your first free issue arrives!