I noticed the GOG version of Braveland does not come with a game manual. Does anybody know where I can get an electronic version of the manual? Thanks.

I don't think there is a manual. The game has a built in tutorial that explains the basic mechanics and the rest is trial and error. Nice game though and lots of fun.

There is a thread over on Steam - https://steamcommunity.com/app/333880/discussions/0/617328415068543024/ - that explains a bit about the mechanics. That may help fill in the gaps.