If you wish to use e.g. IRC on TUT servers, you can log in either one of the following servers with your intranet account (username and password): linux-ssh1.cc.tut.fi or linux-ssh2.cc.tut.fi,. In order to use these machines you need to apply for the access rights in POP, under Study Info > IT services > Computers > Linux.
At the moment we don't have an extensive Irssi guide in English, since clear and easy to follow tutorials are so easy to find. If you aren't technically savvy enough to get IRC and Irssi (IRC client popularly used) up and running by yourself, you can start with this one.
To connect to IRCnet servers you can use command:
Almost all of the official and unofficial TUT and Skilta channels are on IRCnet. The official channels of Skilta are #skilta and #skiltafuksit2020 for fuksis. Conversations on these channels are currently mostly in Finnish.