It's really up to your own personal preference. On my TpT page, you can purchase unit bundles and curricula for immediate digital download. After purchasing, you download a zip folder of every resource and lesson plan. The benefits to this is that you get everything downloaded at once, all organized into folders, and get access to all future updates for free. 

Here on this site, you get access to all these same resources and lessons, but you download each resource individually as needed. As long as you maintain your membership, you get access to everything! Should you cancel, you keep only files you downloaded, but will lose log-in access to the lessons and links.

Yes! After you sign up for one curriculum, go to the Course page for it and at the top of the page you will see a link and big red button for "Discounted Add-On Subscriptions". Each additional curriculum you add is only $20/month or $240 with an annual plan.

After entering your info, you will receive a log-in and password for the site. You’ll then gain access to the Dashboard where you can start going through all your new resources! You'll immediately gain access to every unit in the curriculum.

If you choose the subscription, your credit card will be charged the monthly rate when you sign up and then on that same date each month while you have the curriculum package. That monthly charge gets you the full access to all these great lesson plans as long as you’re a member. You can cancel through your settings at any time.

If you select the annual plan, you will be charged that full amount. After 365 days, your plan will auto-renew for the next year. Be sure to set it to cancel at any point during the year if you do not want it to renew.