You can get the source files that are used in manoharAcademy.com videos from here.

#Presentation Slides can be accessed from:

https://docs.google.com/presentation/d/1nfhIBJKjHHyJXjdNKndoukdlwEZbCmWaGe5wI4SamM4/edit?usp=sharing

#Excel Sheet presentations can be accessed from: https://docs.google.com/spreadsheets/d/1nJerfvqJDs95eOdRAEmm25bCKq5t3EyfeBMTtXXolNI/edit?usp=sharing