It would be great if the browser taught people these things during use. Kind of like some small drop down at the top "I see your closing a lot of tabs, have you

It would be great if the browser taught people these things during use. Kind of like some small drop down at the top "I see your closing a lot of tabs, have you tried ctrl-w?". As it stands unless I'm wrong a user would have to go digging for these shortcuts online or by clicking help and actually knowing what they are looking for. Seems like a stretch for most browser users.