My son is about to move from GCSEs to Highers. For his GCSE courses he has really benefited from youtube channels and online programmes specifically designed to support kids with the course content and with exam prep. Do such things exist for Scottish Highers? Or are the students just dependent on what their school provides? My son has really struggled with following the teaching of one of his school teachers so the online content he can access has been really crucial in his ongoing progress. I am also realising that while for GCSE there is a textbook created by the exam board for each course (as well as many others by other publishers) yet there don't seem to be official text books for Highers - is that correct?