Click to enlarge.

Pay special attention to the red boxes: under usual conventions, you would play in these cases. In LL, you would not.

The end result is a less systematic, more analytic, more situational playstyle than what you may know, where you don’t always play leftmost.

Other LL links:

When NOT to play left
LL in a nutshell
Impacts of LL on strategy
Is LL inferior to CL?