Someone wanted to learn this too, so Grasp built them a personal learning path.
You can keep exploring this one or create a path like this one shaped around you.
Recommended resources
Module 1
The Building Blocks of English
Module 2
Navigating Time: Present and Past Tenses
Module 3
Navigating Time: Future and Perfect Tenses
Module 4
Constructing Correct Sentences
Module 5
Active and Passive Voice
Module 6
Reporting Speech: Direct and Indirect
Module 7
Expressing Nuance with Modal Verbs
Module 8