Not a recruiter but a current CS undergrad and your skill areas really resonated with me - GPU programming, HPC and scientific programming, and Audio/DSP are al

Not a recruiter but a current CS undergrad and your skill areas really resonated with me - GPU programming, HPC and scientific programming, and Audio/DSP are all things I wanna explore. Do you have any advice on where I should focus my efforts to get better in these areas? I've been looking into books and resources, and I'm not sure if I can pursue something like DSP on my own time without enrolling in formal college courses because ironically enough I'm a bit scared of math.