Sometimes you need to quickly immerse yourself in a new field. You might want to gain expertise or quickly gauge what the current issues are around a particular topic. One way of doing this is by creating a dedicated Twitter account to follow a topic. Below some instructions on how you could do this.
http://blog.hansdezwart.info/2013/06/12/how-to-use-twitter-to-become-an-expert-on-any-topic/