Help to know online HR course or certification program to sharpen the knowledge of HR and related domain

Vaijk
Hello to all the HR fraternity, I would like to seek help from all the seniors of this forum on pursuing an online course/ certification to sharpen the knowledge of HR and related domain as in my case there was a 5 years of gap due to some other unavoidable commitments. And now I want to hone my skills to step up in my profession once again.
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