CR-1 is the immigrant and/or Permanent Resident classification for the spouse of a US Citizen when the marriage is less than two years old. You will find information on this topic referring to an Immigrant Visa, CR-1/IR-1 or (erroneously) "I-130". You will find most "proper" information by using "Immigrant Visa"; that is the term used by the USCIS/United States Citizenship & Immigration Service and the DOS/Department of State.
Applying for an Immigrant Visa is a two-step process:-
Please begin here:
Green Card for an Immediate Relative of a U.S. Citizen
Approved I-130 petitions are sent to the NVC/National Visa Center, a State Department office that prescreens and begins Immigrant Visa applications. There are several steps to be completed here, and expected processing time is 2-5 months.
NVC-pre-cleared visa applications are forwarded to the visa-issuing post abroad. An interview date is assigned. After a successful interview, expect a delay of one week-several months for the visa to be issued. Normal cases without any additional security checks see the visa delivered within a week.
Immigration cases are notoriously individual; what worked for your friend or anyone else will not necessarily apply to you. US immigration procedures can change quickly and with little notice. It is important that you stay alert for changes and pay attention to your own case. USCIS will not give specific notice to you about what you need to do in most cases and information/answers from their 1-800 telephone number and offices is often incorrect. You are advised to confirm all steps before filing anything. It should be noted that the US Supreme Court has held [in other contexts] that the US Government is not bound by any incorrect "advice" given by an agency employee.
 A Sample NVC Timeline
User wario75 posted this detail of his NVC timeline for your general reference. His original post is here http://britishexpats.com/forum/showpost.php?p=9172081&postcount=12
27-Jul-10 Notification from USCIS case has been transferred to NVC Letter dated July 27
10-Aug-10 Case received notification from NVC and case number assigned
24-Aug-10 Payment made online for Affidavit of Support
25-Aug-10 Mailed off DS-3032
30-Aug-10 Mailed off AOS (I-864EZ) packet
15-Sep-10 Received email notice from NVC to pay Immigrant Visa (IV) Fee
16-Sep-10 Made IV payment
20-Sep-10 Sent out application to ACRO for Police Certificate
28-Sep-10 Received request from NVC for DS-230
04-Oct-10 Mailed off IV package to NVC
30-Oct-10 Received information request from NVC Passport bio page requested. Received at NVC Nov 5.
10-Dec-10 Received email notice from NVC with interview date Interview scheduled for Jan 18, medical scheduled for Jan 4. Sent request to have interview rescheduled.
10-Feb-11 Interview at US embassy (originally scheduled for 18 Jan)
It's probably fair to say my interview could have happened earlier had the NVC not come back with a request for the missing info!
Hope this helps