Page navigation on Mac

As newbie Mac OS user I’ve faced problem “where the f**k are page up, page down, etc. keys?”. A little of exploration and here it is (MacBook Pro):
fn + arrow down = page down
fn + arrow up = page up
cmd + arrow down = end
cmd + arrow up = home
fn + backspace = delete (this is quite annoying that on PC I’ve had one button for that)