Welcome to the macProVideo forums :)
A Pro Subscription gives you access to ALL video tutorials. You watch them online in your internet browser.
Click on 'Launch Player' at the top of macprovideo site and test it out. You can watch the first 10 videos of each tutorial for free when you are logged in.
There is no limit to how much time you can spend watching tutorials each day/month.
If you purchase tutorials individually then you only have access to that particular tutorial, e.g. Mac OSX 101. You cannot watch it online. You need to download the free NED player to your Mac/PC and that will allow you to download the HD quality version of the tutorial and watch it.
Once you have downloaded the tutorial you will not need an internet connection and can watch it offline whenever you wish. You own the tutorial and will need to pay no monthly fee... But of course, you can only watch the purchased tutorials.
Hope that helps,
Please also refer to our About page where this is explained: