Business English Course for ESL Students is one of those focused courses you might want to take if you need domain-specific vocabulary training. Mostly containing work-related words, sentences, phrasal verbs and idioms, it's near 6 hours of videos are quite interesting, well done and practical.
Finance, retail, marketing, interviews, phone calls, meetings, being polite/correct at work (with your colleagues, etc.), even topics about computers and entrepreneurship and stock market, everything is exactly what you would expect. If I had to find something to improve, maybe the medical field chapter is too specific, but for your everyday life is still useful, so not a real complaint.