How can I track 2 conversions through a google adword campaign? (Please see details)

I'm currently pulling traffic to my website through google adwords in an effort to get them to sign up for a buyers guide (I'm tracking this conversion). I then have a sales team follow up with them. How do I track that conversion? Are there any online services? I'm trying to make my whole ad campaign more efficient and see exactly which keyword phrases are converting to sales.