What is the easiest way to get the Oghma Infinium?

Answer 1

Gaining the Oghma Infinium is a tedious but rewarding effort, this can be started when doing the main story-line quest "Elder Knowledge" or can be done whenever, the part of the quest is for you to recover an elder scroll from Blackreach (which is under Alftand) in the tower of Mzark.

You have to have the quest first which is given by Septimus Signus at his outpost north of Winterhold (the location is a cave marker on the map), he will talk for awhile but at the end he gives you the 'Attunement Sphere' and a 'Blank Lexicon', both items are required and unable to sell or dropped, and then follow the quest marker.

On lower levels it is vital to prepare as there are a good number of Falmer and 2-3 Steam Centurions, potions of health is extremely recommended and advised to bring either restore magicka and/or stamina along as well, bring good armors and weapons too (like you wouldn't have it on you anyway).

Starting at the top you will encounter a kajiit who will be hostile and Dwemer Spiders and a small quantity of Falmer, its pretty much one way but follow your marker, middle is filled with more Dwarvern machines and a lot more Falmer but its simple enough to keep on going, you will reach a Centurion sooner than later who can be dispatched easily through sneaking, you will reach the stone table with 2 people arguing, you can wait or kill both of them as they will become hostile to you and each other, use the Attunement Sphere on the table to unlock at staircase to Blackreach, if you killed the Centurion and you are going to be overweight use the dropped key with the elevator to head back up to the top but continue on.

At Blackreach, you will find its a massive cavern with suspended blue particles in the air, infront of you is a laboratory with 1 Daedra heart (vital for daedra smithing) and a sample of red nirnroot, there are over 30 red nirnroot samples to be found, to the left is where the Falmer lurk in the castle-like structure and continuing forwards leads you to the tower of Mzark, go up to the tower and enter, when you have reached the place it will have a giant sphere in the center, but go left up the ramp to the top, put the blank lexicon onto the holder to activate the buttons, fiddle around with the buttons until you unlock the next button, when the 3rd button has been clicked in then (you might have to click the 4th button before this) take the Runed lexicon out *REMEMBER* to take the elder scroll from the middle after you have finished then leave to the elevator under the controls.

The last part requires you to go back to him with the runed lexicon and you will receive the Essence Extractor, you are then required to get the blood of a High, Wood and Dark Elf, Falmer and a Orc, but before you leave you will be greeted by the Daedric Lord Hermaeus Mora and he will say that Septimus has neared the end of his usefulness, getting the blood self explanatory and it will bring up a new menu saying "loot body' or "harvest blood", still having the option to do the other after.

Go back after getting the blood samples and Septimus will open the Dwarven lockbox, here there is the oghma infinium and Septimus will die, Hermaeus Mora will applaud you on your efforts and will let you keep the book.