Articles and guidelines is hosted at MS4U website.
Please click on below links:-
Part 101: - Pre-requisite for System Center Operation Manager 2007 R2- Click here
Part 102: - Installing Operation database for SCOM - Click here
Part 103: - Installing Management Server for SCOM - Click here
Part 104: - Backup Encryption Key for SCOM - Click here
Part 105:- Verifying SCOM installation - In progress..
Note:- Link will be updated once the articles is posted in MS4U website.