Persuade the count then ask him about buying a house
The quest A Brush with Death In Cheydinhal.
It is halfway up the Carbolo river on the right hand side. This is the big river beneath Cheydinhal.
you'll find it in the mages guild quests anyway, but it's NNE from cheydinhal, i think.
If you have the Path of Darkness mod in Oblivion, look for Tybor Black, then the armour is in a stone coffin, underwater, in cheydinhal. Look near the bridge next to the chapel.
The "Restore Intelligence Spell" is sold by Ohtesse who works in Cheydinhal's Great Chapel of Arkay. She sells the "Apprentice" level of this spell. I do believe that this is the only place you can purchase this spell. Cheydinhal is a city in eastern Cyrodiil.
Hero Hill is located Southeast of Cheydinhal. It is South of the Rickety Mine and North of the Dark Fissure.
If you go to a city where there are castles go in to the castle and talk to the count or countess.(You ussually have to do a quest before you get a house).I got 2 without doing a quest.I went to cheydinhal and bruma.Plus there are good houses there.
Goldbrand can be obtained by completing the level 20 quest for Boethia. His shrine is located South-East of Cheydinhal and in the mountains.
The only accessable Dark Brotherhood sanctuary in the game is the one in Cheydinhal and the Black Hand does not meet in any specific place.
Dive Rock is a mountain northeast of Cheydinhal (quest-related). It is home to a simple campsite and, on a clear day, one of the most spectacular views in the province.
Each horse is different, so the best is either the unicorn which can't be a default horse, or the Shadowmere which can be a default horse. The unicorn is the strongest and the 2nd fastest. The Shadowmere is the fastest. The Best buyable horse in Oblivion is the White Hourses (Cheydinhal stable).
buy it