Here's a quick tutorial on how I put the pages together.
Seal the envelopes - I used 11 but you can use as many or as few as you choose. Trim a sliver of both short ends - essentially making a tube.
Score and fold all the envelopes at 3"
Apply DST to the short side, ensuring that you leave a gap of about 1/4" from the fold - this is essential as it allows your book to expand.
Remove the tape and stick the pages one on top of the next - a long page sticks to a short page for each leaf.
Decorate your pages, adding folded papers to form flaps coming out of the long pockets.
Add paper covered chipboard covers.
Thanks for looking