One Point Perspective
One point perspective allows objects and environments to be drawn so that at least one plane of the object or environment is perpendicular to the viewer's line of sight. Of the three perspective frameworks, it has the advantage of being the easiest to master and produces suitable interior perspectives for the communication of scale, portion and space.
The drawback with one point perspective is that it often provides static and uninteresting views of exterior environments. It is also difficult to clearly communicate the form of organically shaped products.
Want to Know More?
If you're keen to know more about drawing in perspective for:
Architecture, try reading William Kirby Lockard's book 'Design Drawing'
Product Design, try reading Koos Eissen's book 'Sketching: The Basics'
Figure Drawing, try reading Burne Hogarth's books on Figure Drawing
Two-line One Point Perspective
To assist you in learning how to drawing one point perspective, consider this technique from William Kirby Lockard.
Setup your drawing using a horizontal line to represent a horizontal vanishing line and a vertical line to represent a vertical vanishing line. Where these two lines intersect is will be the vanishing point to which both the vertical and horizontal planes will converge.