Study Guides   
Quick research help for schoolwork or to satisfy your own curiosity.

antistudy - literature.. search engine to free 'cliff notes', 500+ novels, plays, poems.
Bibliomania - literature.. free world literature; over 800 classic texts.
BookRags - literature.. free classic literature study guides, over 1,500 online e-books.
Education Planet - portal.. search 100,000+ educational sites and lessons.
Fact Monster - variety.. complete reference center; almanac, atlas and more.
heySmarty - portal.. over 400,000 listings by subject; academic community forums.
Novel Guide - literature.. literary analysis of classic and contemporary literature.
PinkMonkey - literature.. free child safe, digital library, literature notes, study guides.
SparkNotes - variety.. guides written exclusively by students and recent graduates.

B. Homework Help    
Online homework aid and tutoring services for all grade levels.

bigchalk - resource.. k-12; help by subject or grade level, hire an online tutor.
BrainMania - q & a.. 100's of volunteers have the ability to answer the most unique questions.
DiscoverySchool.com - resource.. by discovery channel; for students, teachers, parents.
EduHound.com - portal.. k-12; over 30,000 education related websites and resources.
GreatGrades.com - courses.. purchase entire courses in all subjects; grade levels 1-12.
Homework High - q & a.. live sessions; experienced teachers ready to answer your questions.
HomeworkSpot - portal.. k-12; free access to libraries, museums, and current event sources.
ILN - resource.. 9th grade+; interactive lessons in math and science.
LearningNetwork.com - resource.. offers learning solutions for every level of education.
QuickMath - math.. get answers to algebra, equations and calculus questions instantly.
Smarthinking - e-tutoring.. fee required; real time online tutoring for most subjects.
Sunburst - videos.. k-12 educational videos, software and online resources.

C. Test Preparation    
Programs, practice tests, and tips to make you a better test-taker.

4Tests.com - practice tests.. provides sample tests and resources to aide in preparation.
CPAExam.com - cpa.. self-study or online classes; review materials.
ExamCram.com - tech.. computer and programming exams and resource center.
GMAC.com - gmat.. graduate management admission council; prep for GMAT.
GRE.org - gre.. register online and download prep software.
Kaplan - mega-site.. one-stop destination test prep.
PrincetonReview - mega-site.. free online tests; prep courses online and in your area.
TestDEN - toefl.. free practice tests; premium prep services, prep tips for the TOEFL.