You will find many things, such as, Gameplay, Beta Versions, What too expect,
What system specs you need and more.
Yes, that is a wiki link, although wiki can be edited, it is a strong source and provides valid information.
Here are some quick things that you should know about Battlefield bad company 2.
Developer(s) EA Digital Illusions CE
Publisher(s) Electronic Arts
Series Battlefield series
Engine Frostbite Engine (with Direct3D 11 extensions)
Platform(s) Microsoft Windows, PlayStation 3, Xbox 360
Release date(s) NA March 2, 2010
EU March 5, 2010
Genre(s) First-person shooter, action
Mode(s) Single-player, multiplayer
Rating(s) ESRB Rating Pending
Media Blu-ray Disc, DVD
Operating System Windows XP Windows Vista or Windows 7
CPU Intel Core 2 Duo @2 GHZ Intel Core 2 Quad , AMD Phenom X4
Memory 2 GB RAM
Hard Drive Space 10GB for disc version or 15GB for digital version
Graphics Hardware DirectX 9.0c Compatible Graphics card with 256 MB VRAM DirectX 10 Compatible Graphics card with 512 MB VRAM
Sound Hardware DirectX 9.0c compliant Sound card
Network 1 Mbit/s internet connection for online play