This video explains how to sketch the intersection of lines, and planes, how to sketch lines parallel to planes, and how to sketch the intersection of a line and a plane.
This video explains what intersecting lines are, shows how they intersect at a point, and presents several theorems regarding the angles created by the intersecting lines.
Source: Craig Coletta on Guaranteach
This video explains why the intersection of two planes is a line.
This video explains how to construct a line perpendicular to a line at a given point and how to construct a line perpendicular from a given point to a line, using a compass and straightedge.
Source: MrJsoLive on Youtube