Perspective

These links on perspective below comprise of the most extensive treatment of linear and other perspectives I could find online, if you want to begin a study of any aspect of perspective this is where to begin.

Elements of perspective

Perspective: An overview

Single point or central perspective

2 Point Perspective

3 Point Perspective

Advanced Perspective

Shadows, reflections and atmosphere

 Perspective as Symbolic Form by Panofsky 

If you want to test out the relationship between perspective as a geometric drawing system and actually looking, you could set up a system similar to Ablett's Glass Plane which was used in art colleges during the 1920s in England, the image below is from a trade advert from 1921.

These on line tips on drawing are very interesting, there is a lot of potential here for exploring how flat images can be transformed into perspectives.  http://kotaku.com/how-to-draw-detailed-buildings-1699399560



Get perspective graph papers here:

References: 

If you want to explore these types of ideas in depth an excellent introduction is Martin Kemp's 'The Science of Art'.

Read that in conjunction with 'The poetics of perspective' by James Elkins and you will have a good grasp of both the scientific and poetic issues associated with this fascinating discipline. 

See also:

Uses of perspective

Technical drawing

Jiro Takamatsu - Shadow and perspective

Drawing, the theatre, perspective, photography, light and film