I don’t know what you mean by ‘place’, but since you’re online already, start with the Cycling '74 website.
You can download a 30-day demo. The documentation is extensive, and their examples are working patches that you can copy and play with. Trust me, that’s pretty cool.
There are several people/institutions sharing free lessons on YouTube. And if you prefer to learn in a formal educational environment, the Cycling '74 website provides links to those too.