Classifications of Signals are covered by the following Timestamps:

0:00 - Classifications of Signals
1:04 - Continuous Time and Discrete Time Signals
1:57 - Analog and Digital Signals
5:28 - Deterministic and Random Signals
6:51 - Even and Odd Signals
9:56 - Periodic and Aperiodic Signals
10:58 - Energy and Power Signals