Operating System topics

[ { "topic1": [ { "name": "topic 1 name" }, { "explanation": "some explanation" }, { "youtube-video": "https://www.youtube.com/watch?v=luAkR9VaLcw&list=PLwgFb6VsUj_mtXvKDupqdWB2JBiek8YPB&index=1" },{"picture" : "shorturl.at/tuzI5"}, {"explanation" : "some explanation"} ] }, { "topic2": [ { "name": "topic 1 name" }, { "explanation": "some explanation" }, { "youtube-video": "https://www.youtube.com/watch?v=luAkR9VaLcw&list=PLwgFb6VsUj_mtXvKDupqdWB2JBiek8YPB&index=1" },{"picture" : "shorturl.at/tuzI5"}, {"explanation" : "some explanation"} ] } ]