We234...
There is a US based association dedicated to to sport/recreational/experimental aviation of all kinds... homebuilt, antique/restoration, etc...
Experimental Aircraft Association [EAA]
There is also a [US? based] website dedicated primarily to experimental aircraft builders and aircraft restoration...
There several 'magazines' available with decades/troves of articles on homebuilt aircraft projects... under the common the sun... [2] US based magazines that come to mind instantly...
Sport Aviation [EAA's publication]
Kitplates
AND there are WAAAAAAY-too many books to mention that are dedicated to aircraft building, restoration and various fabrication and maintenance skills covering the wide array of aircraft structures, mechanical, electrical, flying, etc. The US government Federal Aviation Administration has treasure-trove of handbooks, manuals, advisory documents, etc... for free on-line... on EVERY aspect of aviation, flying, 'technology/maintenance', medical/human-factors, etc, etc... from very simple to complex.
Also...there are similar-to organizations, websites, magazines, books, etc... published around the world in various languages.
When my dad was building, then flying, his Thorp T-18... my experience alongside him as a child, then young adult ... helping, flying, listening, then understanding... was the foundation for MY lifetime career.
Have FUN!
Regards, Wil Taylor
o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]