The Laws and Basic Principles of the Torah  
   Immanuel O'Levy's 1993 translation, as a single text file.
   http://www.fordham.edu/halsall/source/rambam-yesodei-hatorah.txt

Maimonides' Eight Degrees of Charity  
   From the Mishneh Torah, as translated by Jonathan J. Baker.
   http://www.panix.com/~jjbaker/rmbmzdkh.html

Maimonides: The 613 Mitzvot  
   These prescriptions and proscriptions, in the order of Maimonides' Sefer Hamitzvot. Provided by the Fordham Medieval Sourcebook.
   http://www.fordham.edu/halsall/source/rambam613.html

The Thirteen Foundations of Judaism  
   From Maimonides' Commentary on the Mishnah, as translated by Eliezer C. Abrahamson.
   http://members.aol.com/LazerA/13yesodos.html

Oath of Maimonides  
   From the Fordham Medieval Sourcebook.
   http://www.fordham.edu/halsall/source/rambam-oath.html

The Laws Concerning Mashiach  
   A section from the Mishneh Torah on this subject.
   http://www.kesser.org/moshiach/rambam.html