I've created these slides for university, it's a short introduction to the jabber protocol.
Indented for: techinical people, who heard of jabber, probably used it, but never went into "how it works" questions.
Not indented for: Those who now what iq, message and presence stanzas stand for :)
Hungarian contains thesis examples too (MSN-like custom emoticon handling, music streaming as presence information, etc).
English version (without thesis examples)