Link recommendations

Battlefield 2:

EA: Battlefield 2
The offical website for Battlefield 2
URL: http://www.battlefield2.com

Secrets of Battlefield
A lot of practical tips and discussions, its maybe a bit non updated
URL: http://www.secretsofbattlefield.com/

Battlefield 2 Optimization Guide
A good in depth guide for how you can get more speed in Battlefield 2
URL: http://gear.ign.com/articles/626/626714p1.html

How to Become an Effective Sniper in Battlefield 2
The name says it all
URL: http://www.wikihow.com/Become-an-Effective-Sniper-in-Battlefield-2

Heli tutorial 1, Solo and Darian
Very good tutorial on how to handle the helicopter
URL: http://video.google.com/videoplay?docid=-2470740856614374159&q=bf2+heli+tutorial

Flight Guide
Many useful tips for using airplanes
URL: http://planetbattlefield.gamespy.com/View.php?view=Strategy.Detail&id=83&game=4

Battlefield 2 Chopper School
Useful info to know about helicopters
URL: http://www.widowpc.com/2005/07/battlefield_2_c.php

Battlefield 2 Strategy Guide
This is what makes Battlefield so fun to play, outsmart your enemy with good strategy
URL: http://www.widowpc.com/2005/08/battlefield_2_g.php

Battlefield 2 Awards Guide
Useful information about how to get that specific award
URL: http://bf2.scyther-bladez.com/

Battlefield 2 Player Stats
A quick player statistics site
URL: http://www.bf2stats.nl/

BF2Monitor
Find server and playing friends online for Battlefield 2 and Battlefield 2142
URL: http://www.bf2monitor.com/

BF2Player
Player statistics for Battlefield 2 and Battlefield 2142
URL: http://www.bf2player.com/

BF2S
Maybe the most popular player statistics website, but often have problems with non updated old statistics and slow server
URL: http://www.bf2s.com/

EA ::Battlefield 2:: Home
EA's official portal page for Battlefield two including their leaderboard statistics (look under Player Profile and Search or Leaderboard)
URL: http://battlefield.ea.com/battlefield/bf2/default.aspx

Battlefield 2 Software:

ModJive (* recommended)
ModJive is an application that allows users to view and download the latest available modifications for Battlefield 2 and Battlefield 2142. It will automatically install the mods and later update them for you when new versions are released. It is the essential companion for every Battlefield player.
URL: http://www.modjive.com

Tactics Editor for Squad Action (TESA) (* recommended)
An editor for squad tactics. It is designed for use in competitive gameplay, where clans organise a strategy for how they are going to attack a map. It gives provision for entering text for the overall faction strategy, squad strategies and individual team member actions. It also has the ability to select kits, spawns and vehicles for team members. Members can be organised into squads.
URL: http://tesa.sourceforge.net/

ATC (Advanced Tactical Center) (* recommended)
A wonderful tactical software that lets several people to work on the same map grapichally and plan tactics and also include chat.
URL: http://www.foolishentertainment.com/index.asp?p=2&s=6

Other game related sites:

Speltorrents.se
Host torrents for a lot of good gaming stuff
URL: http://www.speltorrents.se

Portforward Routers Config Section
Explains how to configure your router for games and more.
URL: http://www.portforward.com/english/routers/port_forwarding/routerindex.htm