If you go to coptichymns.net and register to get access to media, you can go to the video section and then click on faith and church there's about 1.5 hr of video in high and low quality by Fr. Athanasius Iskander where he does a short Liturgy and pauses to give explanation. Most of the actually Liturgy is edited out & just the explanation of the symbolism and meaning of things is left. The same priest also has a book on understanding the Liturgy that will be up on that site eventually, in the mean time it's availabe at the site bellow, with a few editing problems.
Understanding the Liturgy book online: http://www.stmarycoptorthodox.org/liturgy-abouna.htm