DataStax do the workshop on the 29th July on the topic of NoSql. In this workshop i learned so many things on the topic related to Nosql,and also learn how cassandra working.The way of explaining in the workshop is very crystal clear . in the last of the workshop it also take quiz to check the performance of the learner who attended the workshop. Go and click on the given link and attend the workshop.https://www.youtube.com/watch?v=fl0q4eUMn20