As both Sean & Ray have said, since the book was first published any errors/amendments etc have been updated in the 2nd edition & also on the amendments on this forum,
But it would be an impossible task to locate every person that has bought the first edition book & yes we are very lucky that Haynes & Chris fully support this forum in the support they give to all builders that find this forum......not everyone has a computer etc .
The Haynes Roadster must be by now one of the most popular "self build " cars within the "kit car world", as per the thread "how many Roadsters being built" there are now over 120 cars under construction ....& thats just the ones known about on this forum
Antonia....Welcome to the forum, & hope you find it a useful tool during your build.
cheers
andy