What is Academic English?

http://englishforuniversity.com/what-is-academic-english/

Using English for Academic Purposes: A Guide for Students in Higher Education  

http://www.uefap.net/  

Academic English Skills

http://aeo.sllf.qmul.ac.uk/

Academic Writing Skills

Academic Writing

https://owl.english.purdue.edu/owl/section/1/2/

http://eolf.univ-fcomte.fr/?page_id=149

Writing Argumentative Essays

https://owl.english.purdue.edu/owl/resource/685/05/

APA Formatting and Style Guide

https://owl.english.purdue.edu/owl/section/2/10/

Writing Guides

http://writingcenter.unc.edu/handouts/

http://writing.umn.edu/sws/assets/pdf/2010swg.pdf

Academic Reading Skills

Reading Skills for Academic Study

http://www.uefap.com/reading/readfram.htm

Academic Reading Strategies

http://writingcenter.unc.edu/esl/resources/academic-reading-strategies/

Critical Reading

http://www2.le.ac.uk/offices/ld/resources/writing/writing-resources/critical-     reading

Critical Reading Towards Critical Writing

http://www.writing.utoronto.ca/advice/reading-and-researching/critical reading

Learning the Art of Critical Thinking

http://www.criticalthinking.org/pages/becoming-a-critic-of-your-thinking/605

Listening and Speaking Skills

http://www.ted.com/talks

http://www.bbc.co.uk/worldservice/learningenglish/general/talkaboutenglish/2009/04/090427_tae_al.shtml

Academic Vocabulary

Academic Word List

http://www.victoria.ac.nz/lals/resources/academicwordlist

Academic Word List Exercises

http://www.uefap.com/vocab/vocfram.htm

EAP Vocabulary Exercises

http://www.uefap.com/vocab/exercise/exercise.htm

Free online courses for self-development

https://www.coursera.org/

https://www.futurelearn.com/