(R)evolutionary Committees should do all of the above steps, with the optional ommission of registering at Twitter (for your privacy and security reasons).
For secure communications with your own committee members we recommend pidgin.im together with an XMPP account after registering a Jabber account at one of the many Jabber servers and enabling the encryption OTR "off the record" plugin from www.cypherpunks.ca/otr.
For other software, settings, or technical questions or problems, please ask in the Support Forum at mathaba.org (Site No Longer Exist).