For fantastic, basic information start with Science eBooks!!! Choose articles from U*X*L Encyclopedia of Science or Gale Encyclopedia of Science first. As your understanding grows, try some of the other articles.
Archaebacteria
• Introduction to the Archaea
• Archaea and Other Extremists
• Eubacteria and Archaebacteria: the oldest forms of lifeEubacteria
• Eubacteria
• Bacteria
• SparkNotes: Monera: Eubacteria
• Eubacteria and Archaebacteria: the oldest forms of lifeProtists
• Protists
• Protista — Algae, Protozoa, Slime Molds, and Water Molds
• ProtistaFungi
•The Fungi
• Fungi
• Tom Volk's Fungi