She actually has her DVD on youtube if you can search 'Baby language lesson 1 part 1'
Anyway, The lactation consultant at the hospital told me that if i breastfeed my baby, i don't need to burp her, but i guess my milk supply was overwhelming that sometimes she swallows the milk with big gulps which i would think she is swallowing air. So now I burped her after every meal and i also Googled on baby tummy massage and that was helpful too. After two days of gassy stomach she actually slept really well. So here i'll include the video which i found helpful
there is heaps on youtube on how to massage babies tummy.