Sources are the origin of things; They can be books for information, fruits for jam and juices, shops for clothes,..etc Resources are approchable functioning things you could use such as money, car, food,..etc

Source - источник информации Resource - средство, возможность, ресурс

Sources- where you got the information- newspapers, quotes, books, etc. Resources- things that you have availble to use. (I have many resources available to help me study English)