Sachar, Louis. Small steps

Sachar, Louis. Small Steps. Delacorte, 2005 [0-385-73314-3]
It is two years after "Holes" and Armpit has settled down with a job and saving money.
One day one of his buddies from Green Lake, X-Ray, shows up with an investment opportunity. With Armpit's money X-Ray plans to buy 12 tickets to a hot concert coming to town and make a killing scalping them. Well the plan works out until X-Ray pulls a scam on Armpit so armpit can take someone to the concert. That starts a big mess where Armpit nearly gets arrested but is saved by the pop singer at the concert. Of course they fall in love. Because of the trouble with the ticket scalping at the concert the mayor wants to track down the trouble-makers. What will happen to Armpit and X-Ray? Can the relationship between Armpit and the pop singer outlast the trouble? Although this 257 book is not really a sequel to Holes, it does follow-up on some of the characters