Scarlet Monastery
Quests
Class quests
40 Rituals of Power - This is a Mage class quest. It is obtained from Magus Tirth. The objective is to bring a book from the Library section of the Scarlet Monastary and bring it to Tabetha in Dustwallow Marsh. Tabetha is somewhere around tloc 46,57 in the marsh.
Alliance quests
38 Mythology of the Titans - This quest can be found from Librarian Mae Paledust in the Explorer's league section of Ironforge. The reward is the Explorers' League Commendation amulet. This is often times a character's first neck piece. The book needed to complete this quest can be found in the Library section of the Monastary.
40 In the Name of the Light Alliance - This quest is in a line that is started in the basement of the Cathedral in Stormwind. The starter quest is Down the Scarlet Path in which you are sent to Southshore in Hillsbrad foothills. To complete this quest you must kill 4 mobs inside 3 of the parts of the Scarlet Monastary. Houndmaster Loksey is in the Library section, Herod is in the Armory section while High Inquisitor Whitemane and Scarlet Commander Mograine are in the Chapel portion. The rewards for this quest are the Sword of Serenity, Bonebiter Axe, [Black Menace Dagger, or the Orb of Lorica.
Horde quests
33 Hearts of Zeal - This quest is obtained in the Undercity.
36 Test of Lore Horde - This quest is obtained in Thousand Needles
38 Compendium of the Fallen - This quest is obtained in Thunder Bluff.
42 Into The Scarlet Monastery - This quest is obtained in the Undercity.