Forum

Find a lot of information on the slackline highline jumpline on the slackline-tribe forum  , it gathers a large community of slackliners allowing to get in touch between them. 

It will also allow you to ask all your questions about equipment, practice and events.

The other mainly used forums:

Slack Forum (English):

http://slack.forum-actif.net/c2-slackline

Camptocamp (French):

www.camptocamp.org

Slackline italia (Italian):

forum.slacklineitalia.com

Slackline.de (German):

https://www.slackliner.de/forum/

Slackline.at (Austrian):

http://forum.slackline.at

Slackline Pl (Polish)

http://slackline.fora.pl