#1
are you wsing a tungsten for allum . or standard 2% . it is easier to start to learn with 2% , as hotrod said get a puddle and haul ass .
#2
what thickness are you trying to weld , heavy guage allum . is hard to get to "heat up" . try to start to learn on about .83 thickness .
# 3
best way to learn to tig is to start on stainless , then progress to steel , then to allum .