All the relevant posts regarding writing, reading and speaking English can be found here. As a wanna be academician, you need to be able to articulate extremely well. Your writing should be cogent, concise and brief covering every points that you want to convey.
Wiktionary – has grown beyond a standard dictionary and now includes a thesaurus, aim to include not only the definition of a word, but also enough information to really understand it. Thus etymologies, pronunciations, sample quotations, synonyms, antonyms and translations are included.