Best book or tutorial for airfoil basics?

[The Mechanic]

Hello! I am in search of a book and or tutorial for a Play school guide to Airfoils. I don't know very much about airfoils and I need to know how to read polar graphs and other basic information about airfoils. What do you guys suggest? Also how can you tell where separation bubbles form by looking at polar graphs?

[Ollie]

Almost every thing you want in one page:
http://www.mh-aerotools.de/airfoils/hdipolar.htm

Almost every thing you want in one video:
http://www.soaringstuff.com/airfoils.html
(becareful of this source)

Almost every thing you want in a computer program:
http://www.profili2.com/eng/polari.htm

Almost every thing you want in a book:
http://www.b2streamlines.com/books/UPwoM.html


Most transition graphs show where the separation bubbles start but not where separation bubbles are ending.

[Aethertek]

http://www.aerodyn.org/aero.html
http://www.zenithair.com/kit-data/ht-87-5.html
A few more