We also had a past Webinar with a general overview of the oneAPI LLVM-based compilers:
Introduction to the Next Generation of Intel® Parallel Studio: Transition to the Latest HPC Software Development Suite
This webinar describes what the new Intel(R) oneAPI DPC++/C++ Compiler is, options on how to download and install the compiler, and to set up environment to use the compiler. We will leave time for your questions or issues around download and install. This webinar is designed for those still using Intel(R) Parallel Studio XE and have not made the move to the oneAPI compilers. Come learn how to move your development to our latest compilers!
Register Here https://software.seek.intel.com/ask-the-compiler-experts