Sorry I'm late for the party all, I've been working 7 days a week for the last 6 weeks. Kinda makes you lose track of time. I think I had
a 
day off last month, but I may have slept through it. Thanks to all who helped out.
Chapter 18 of Slackbook 2.0 (available at Slackware.com,
free) covers package management starting at page 215. Section 18.3, starting on page 222, is where making packages is introduced, although I would recommend starting at the beginning of the chapter to understand the basics of management,
especially dependencies. I don't claim to be an expert on the subject
@HuMJohn is probably much better at it than I. As far as the scripts go, I would suggest downloading and exploding a few packages from slackBuilds.org, then examining the scripts. Another possibility introduced in chapter 18 is the rpm2tgz / rpm2targz command used to convert Red Hat (rpm) packages to slackpacks.
Oh, by the way, welcome aboard, Mate!
Happy Trails,
Paul