Short term certifications/courses

Esteemed experts and professional colleagues,

I am Chartered Accountant currently working with a State PSU in the power sector. Due to my job requirement I have to stay at a remote location & am unable to take advantage of various courses offered by our institute for career advancement.I would be really grateful if I can get useful information about some short term certifications & courses which can be undertaken through the self study mode.

Thanking you