Unit 1
https://www.real-english.com/reo/3/unit3.htm : The alphabet , spelling
https://www.real-english.com/reo/6/unit6.htm : Introducing yourself and others
https://www.esl-lab.com/easy/new-friends/ : New friends - listening exerceise
https://www.real-english.com/reo/8-e/unit8e.htm : Telephone numbers
https://www.ego4u.com/en/cram-up/vocabulary/numbers/cardinal : cardinal numbers and exercises
https://www.ego4u.com/en/cram-up/vocabulary/numbers : ordinal numbers and exercises
https://www.youtube.com/watch?v=SXFTrUMbHN4 : Personal information