which browser do you have? for chrome you have to click on the three dots --> and then choose bookmarks from the drop down
generally if you have too many bookmarks they get hidden on the default bar , u can click on ">>" which will be right beside your last visible bookmark and it will show all the hidden book mark
Bookmarks

I've bookmarked an opening video lesson. Problem is: I don't see anywhere where I can call up my bookmarks! Please advise how to do this. Thanks.