This video introduces Latin first declension nouns. It reviews the uses of each case, introduces the format of noun dictionary entries, endings, how to decline a noun, and how to parse a noun. Finally, the video demonstrates the relevance of noun endings by translating a sample sentence. This video accompanies Wheelock's Latin, Chapter 2. This chapter also includes first declension adjectives to modify feminine nouns, but those are discussed in this video: https://www.youtube.com/watch?v=2as2wPbfTu8
A good video about Latin cases can be found from the LatinTutorial channel here: https://www.youtube.com/watch?v=2fhP_fk2wNQ