Billing Boats kits instructions are pretty minimal, which can make them something of a challenge for those who’ve never built a wood ship model kit before. Apparently, some of the kits make reference to a Building Tips pamphlet, but I don’t know that it appears in every kit.
I only recently learned that you can download a copy of this guide. Now, it’s not really much more than another set of very simple, general hints, but it’s something. Here’s the link to the download: http://billingboats.com/images/stories/instructions/Modeling_Hints_EN.pdf
But, as a general helpful guide, I like to recommend the book Ship Modeling Simplified by Frank Mastini. It’s been around for a long time and it gives you some good guidelines to help the beginning shipmodeler. Plus, it gives you something interesting to read through when you get too frustrated doing the actual building!