You can join short term online courses from Course Providers like COursera, Edx, Simplilearn and Upgrad which have wide array of courses with flexible duration and low fees in various field slike People management, Data Science, Business Analytics  Leadership and Team Planning. 

Hi Ramesh Aravind,

There are many online sites which offer online course for Analytical Skills and people skills. 

Pick the most convinient one.

All the best.

Regards.