How do I get membership to [a Forum]?

Generally, look for a signup option. You will need to answer all required questions to register. Once registered, you have access to post and may also be able read stuff unregistered users cannot.

Have fun exploring.

Start with: Club DSM Canada,  DSMTuners and DSMTalk. The last two are the two largest user base forums.

Here is a full listing of online DSM sites/forums by Country: (Last checked May 2016)
We highly recommend checking country based ones as they have the largest user base.

Canada

• http://ca.dsm.org/
• British Columbia - http://www.bcdsm.org/forum/index.php
• Quebec - http://forum.dsmquebec.org/

Europe

• Hungary - http://dsm.clubforum.hu/welcome.do

United States

• Chicago - http://www.chitowndsm.com/forum
• Cincinnati - http://cinci.dsm.org/modules.php?name=Forums (no new posts since 2007)
• Colorado - http://www.rmdsm.org/
• Florida (Orlando) - http://www.orldsm.com/forum.php
• Texas (Dallas) - http://www.dallasdsm.org/forums/
• Wisconsin - http://www.dsmsupport.com/

Germany

• http://www.dsmworld.net/forum/forum.php

UK

• New England - http://ew.newengdsm.org/forums/