Look at job postings for people analytics roles and identify where the biggest gaps are between your current skills and those being sought (e.g. https://www.glassdoor.com/Job/people-analytics-jobs-SRCH_KO0,16.htm)
Not sure how technically rigorous your Master's program was, but being able to talk confidently about a data analysis/visualization project you've worked on is a must (can be with any of the above tools, but the ones I see most typically in the field are Excel, Python, and R). If you're looking to get experience under your belt, check out highly reviewed coursera or udemy classes on the tool of your choice as they will have practice projects built-into the lessons.
Finally, here are two free people analytics courses that I often send to those interested in the field to familiarize themselves with example projects:
* https://open.sap.com/courses/pa1-tl
* https://www.coursera.org/learn/wharton-people-analytics
Feel free to DM me with any more specific questions, good luck.