The VHDL MC is still in the prototype phase. We have C, C++, and SystemC model compilers that are production-ready. The majority of users model their applications in BridgePoint, then use “Build Project” to create C code for the application. Once you have the C you can cross-compile to a target microprocessor, synthesize, etc…
As far as learning xtUML and BridgePoint, I highly recommend our Getting Started page (https://xtuml.org/getting-started/). This gives you background into why someone would want to use xtUML to model an application. Once you understand “why”, the “Modeling with xtUML” training course linked from there covers “how”. It takes you through the actual mechanics of using BridgePoint itself.