if you're new to outside the box puzzles, all the plans are explained in the welcome post.
to subscribe, click here (or on "subscribe" in the sidebar). be sure to pick a year 4 subscription (end date august 31, 2019) if that's what you want. for now, year 3 is still available as well. the year 3 puzzles are almost done, but no matter when you subscribe you get all the puzzles, so if you haven't been subscribing to the year 3 puzzles, you can still get them.
i'll be traveling a lot for the next couple weeks, but i should still be able to process subscriptions once or twice a day. if you subscribe and don't get a confirmation email within 24 hours, shoot me a message by email or on fb/twitter.