Subs Question

Considering buying Subscriptions.
Quick Question, can I hide content at the level a subscriber buys that was created before their subscription?
So if a user subscribes in March can I show him content at his purchased level from March onwards?

Timed content protection is complicated, but yes it's doable. You have to use the CBSubs content plugin substitutions to wrap inline content with subscription checks. The below gives some examples.

www.joomlapolis.com/news/18550-cbsubs-gpl-4-1-with-timed-content-taxes-inclusive-price-display-and-plan-substitutions-usable-anywhere

There are other options instead of using the content plugin usages like CB Query Field to query for subscription date and return and true or false response based off criteria. PHP can also be used with CB Code Field. Then you'd just condition against that field. It's likely also possible to leverage usergroups and view access levels in a more complex usage with CB Auto Actions.