Let's make a good start. Use the internet to learn!

Here come a few website that will help you improve your grammar and vocabulary:

https://perso.wanadoo.es/autoenglish/freeexercises.htm#TENSES

https://www.english-4u.de/grammar_exercises.htm

https://www.ego4u.com/en/cram-up/grammar

https://www.bbc.co.uk/worldservice/learningenglish/general/

https://www.marks-english-school.com/games.html

https://www.eslgamesworld.com/members/games/grammar/