Botched fuel pump job/Need help!

I changed the fuel pump on my "99 Denali.  I couldn't find the right tool to disconnect the pump from the line so I cut the plastic from the old pump.  I then tried to get the plastic pieces out of the line and couldn't, I ended up damaging the line.  I put it back together and it rode and accelerated much better but, idled very rough.  I drove it scarcely over the next couple of days thinking it would settle in and begin working properly.  when it didn't I knew I had to go back and replace the line. But now it's not starting.  

My questions are:
What is the right fuel line disconnection tool for a '99 Denali?
Once I change the line, how do i get it started?
Is there air in the lines?

Please Help