I'm Mahesh Kumar from India. I really like your website – it’s the coolest one I’ve ever seen!! and I recommend it to everyone.
I do regular practice on it since December. Currently, my avg speed is 65WPM.
But I have two major suggestions for your website:
1. Delete an entire word by pressing [CTRL+Backspace]: There are many applications where we can delete an entire word and We can improve the avg typing speed but this feature is not supported by Keybr, that's why I can't get used to it.
2. Extra mode in Guided Lessons: There should be a mode in which lessons look like a real paragraph, this paragraph can be meaningful or not, but the ratio between the number of capital letters and the number of small letters should be maintained(eg. only 1 or 2 capital letters in a sentence).
Similarly, there should be limited numbers and punctuation characters(I get frustrated by the bombardment of punctuation characters).
Waiting for your reply...