I'm really interested in setting up CRM Cards, which will really give my business and clients a boost, however, I'm not familiar with coding and I haven't been able to find developer classes to learn how to set up CRM Cards
Yes! The CRM Extensions are very powerful! Before looking specifically at the HubSpot portion of this, I would recommend looking at getting a firm understanding of the underlying programming languages that you would need to leverage.
Treehouse offers some very good educational tracks that can prepare you to create an app.
I have always been a fan of the Coding Train. The guys is quirky which is my speed 😀