More elaborate descriptions of how to install some chosen client programs one your home PCs will come in the future.
More information is also available in swedish in the IT-handbok.
The pool number is a single phone number that automatically connects to the first free modem line and gives a busy tone only when all five lines are occupied. You also need a user identity and a password. The user identity and password to use is your UNIX user name and password. Which protocol or connection method to choose. Depending on which connection protocol you use you'll get different views of the network and different functionality.