One thing many people forget is just to be silent after a loooong recitation, let it soak in.
A few simple restrictions about how to perform the Guru Gita are contained towards the end of the chant, but its simple stuff.
5) THE VISHNU SAHASRANAM
Wikipedia has a really good explanation of this chant, which interestingly is said to be only one of three scriptures that produces benefits in Kali Yuga. It is the most widely chanted text in all of Hinduism, and is the central text for the Vaishnava faith. Sahasranam means "1000 names" ... and this is indeed a recitation of the 1000 names of God as Vishnu. Worth reading, extra worth chanting! A beautiful, beautiful practice.
This is a chant that at present I'm trying to do every day. There is a long intro, and the "benefits" bit after the 1000 names. It's lilting, poetic, and the most widely used version comes from the Mahabarata, also on the very battlefield in which Lord Krishna revealed the Bhagavad Gita - and mentioned in the Gita. Amazingly, despite my love of Lord Krishna, I've only recently started chanting this. In Siddha Yoga circles, this was included in the Nectar of Chanting book, but somehow was never actually used... wierd or what.