The Variety, Velocity, Viscosity, Volume and Virality are the different types of data. This video explained all. Combining all and getting useful results is the process of data science where analytics and Hadoop come into picture.
The begining today and beyond analytics play a critical role. The SAS is one of the best software and it can be learnt easily by all legacy to present day new software engineers. Good SAS basics video to learn best way given here for your reference.
The mobile phones you can use to receive data from mainframe. So that the relevant data you can fetch from mainframes.
I liked this cloud computing video. Watch this and make notes of all the points.
The concept Big data you can apply on Mainframe data. This is good advantage for organisations to use mainframe data for predictive analytics.