Expanding your vocabulary is a task that can seem either overly simple or overwhelming. In this workshop, we discuss how to select new vocabulary to learn, what contextual items should be learned along with new words, and best practices for studying new words. We also discuss techniques for dealing with unknown vocabulary.
Study the Academic Word List: http://www.uefap.com/vocab/select/awl.htm;
Examine the AWL sublists: http://www.victoria.ac.nz/lals/resources/academicwordlist/publications/awlsublists1.pdf
See if there is specialized vocabulary for your field, or check your knowledge of the General Service List : http://www.uefap.com/vocab/select/selfram.htm
Learn basic etymologies, to help you understand new words you come across: http://eapcslc.nd.edu/files/2014/03/Etymologies-Handout.pdf
Or make your vocabulary study into a game!: https://tefltastic.wordpress.com/worksheets/eap/awl/