This talk provides a foundational overview of basic petrophysics, focusing on how to identify key rock properties. It covers the essential principles behind the main wireline logging tools used in the industry, explaining how these tools help to interpret downhole log sections. The session also emphasizes techniques for quantifying important petrophysical parameters, such as porosity, lithology, and fluid saturations, providing attendees with a deeper understanding of how to analyze and interpret well log data for subsurface evaluations.