I am an IT Professional with 11 years of exp. I started off my career as a .Net Developer/ SQL database analyst and an administrator. After 3 years, I got side-lined and moved into portfolio management. However my database foundation is strong. I am planning to bounce back into IT development and I see Big Data Analytics is booming currently. Can anyone please suggest me where should I start?  Do you recommend taking training courses with cloud era in order to eventually build an career in this area? if so what would you recommend as I see there are wide variety and I am confused where to begin.