First time users documentation:
https://accounts.comodo.com/docs/trustconnect/First%20time%20users%20-%20click%20here.pdf

Windows client HOWTO:
https://accounts.comodo.com/docs/trustconnect/Comodo%20TrustConnect%20Windows%20HOWTO.pdf

Linux client HOWTO:
https://accounts.comodo.com/docs/trustconnect/Comodo%20TrustConnect%20Linux%20HOWTO.pdf

MacOS client HOWTO:
https://accounts.comodo.com/docs/trustconnect/Comodo%20TrustConnect%20MacOs%20HOWTO.pdf

iPOD client HOWTO:
https://accounts.comodo.com/docs/trustconnect/Comodo%20TrustConnect%20IPOD%20HOWTO.pdf

General client FAQ:
https://accounts.comodo.com/docs/trustconnect/Comodo%20TrustConnect%20FAQ.pdf