Complex sentence: Garret was studying at Australian National University in Canberra, so Farm was only a part-time band, they played for the northern Sydney surfing community and by 1975 the band was touring the east coast.
Split into simpler sentences: Garret was studying at Australian National University in Canberra, so Farm was only a part-time band. They played for the northern Sydney surfing community, and by 1975 the band was touring the east coast.