How would you like to practise?
Sixteen short lessons. Every example is a real sentence from a book on your shelf.
The first page you ever opened is kept here. Read a scene, and it comes back — the same paragraphs, with today's eyes, and everything you have learned since underlined for you.
It is all here, it is all on this device, and every line can be struck out. I keep nothing you have not done in this room.