My son start to see the dvd 4 days ago. He already follow what they say. eg, pointing nose , months, clap hands, arms up..
You can follow the parants guide. I put my son on the highchair when I start playing the dvd, so he will not walking around. the dvd only last for 20 mins, I think your baby is ok to sit there. Its not too long.
Don't worry, baby pick up very fast. The dvds say: starter----1 months
then vol.1----2 months
vol.2----2 months
vol.3 ----2 months
review----1 months
For me, I only buy the dvds