If you’d like to start at the very beginning with the Powertools Crew, you can download a discounted boxset of the first six books HERE.
Yes, I know it says complete series but I wrote a seventh book more recently and haven’t gotten around to updating the boxset yet, sorry!
You can find the seventh Powertools book, More the Merrier, HERE.
They are also featured in four books in the Powertools: The Original Crew Returns series starting with Screwed HERE