Start with some important notes class i.e. Notessession, notesuiworkspace, notesdatabase, notes view , notesdocument and notesuidocument, these are very important classes. Use lotus notes help file to get example and use it in dummy application. See the function and properties and use it . this will clear your concept of lotus notes classes , how functions are used and how properties are used. Lotus script is nothing but the methods and properties. The more you work the more you get acquinances with the classes , they are not tough, Lotus notes help file is very useful.