Become an initiate

Become an initiate is a Fallout side quest.

Walkthrough
When first approaching the entrance to the Brotherhood of Steel at Lost Hills, Cabbot will greet you in a quirky fashion. If asked about joining the Brotherhood, he details that anyone who wants to join the Brotherhood must complete a quest first, apparently on orders from the High Elder. The quest involves retrieving a holodisk from the 'ancient order' in exchange for membership.

Preparation
The surface and the underground facility at the Glow are both highly irradiated, so anti-radiation drugs are a neccessity. Rope will also be required to get inside.
 * Rad-X can be bought from the drug dealer Vance, or from the merchant in the general store in the Hub. Alternatively, 6 of them can be found in an ice chest in the Followers' library.
 * RadAway can also be bought from Vance. It is likely you will need this, just watch out for addictions.
 * Seth from Shady Sands has a rope that can be bartered for
 * the general store merchant from the Hub has 5 to trade for

Into the Glow
Once you have all the supplies, travel to the Glow. Take 2 Rad-X as soon as you arrive for 100% resistance to radiation, for a few hours at least. From here, use the rope you acquired on the metal beam in the crater to descend down into the facility. Move around the first level until you can search the corpse wearing Power Armor to get the holodisk. Return it to Cabbot and you are now an initiate.

Reward

 * Becoming an initiate in the Brotherhood of Steel and having access to their facility
 * 2000 XP

Related Quests

 * Turn on power for the Glow