Mesh Analysis

Mesh analysis provides another general procedure for analyzing circuits, using mesh currents as the circuit variables. Using mesh currents instead of element currents as circuit variables is convenient and
reduces the number of equations that must be solved simultaneously. Recall that a loop is a closed path with no node passed more than once. A mesh is a loop that does not contain any other loop within it.

Learnings:

For us mesh analysis is one of the easiest technique to solve a complicated circuit. We would just loop it, mesh is a loop which doesn't contain another loop inside it anyways, and can solve the circuit with algebra alone. But when asked to find the voltage in a resistor, nodal analysis is our bet.