Collection of links I found interesting.
http://events.fai.org/ – FAI Sporting Calendar – Aeromodelling Control Line Events
http://www.fesselflug.eu – european C/L flight, pictures, videos, articles
http://www.clubtamaran.com/material.htm – online shop of C/L items (handles, lines, motors, propellers etc)
http://www.iroquois.free-online.co.uk/articles.htm – articles about C/L (in English)
http://www.ramsf.ru/ – forum of airsport federataion of Russia
http://forum.rcdesign.ru/f95/thread93042.html – very interesting topic with some tips from Valentin Salenek
http://forum.rcdesign.ru/f95/thread232039.html – discussion about Stalker 51 engine and tips about fuel tank
http://forum.rcdesign.ru/f95/thread247315.html – discussion about relative placement of engine, wing and stab.
http://www.enya-engine.com/ – ENYA engines