Read the ZINN book cover to cover Yet?

Still say Buy a Whole bike as your first bike, (a hardtail) learn how to not crash and die first,

then start on the Scratch build for your first attempt at that ..

NB; there is a difference between 'Find local' expecting it to be sitting there on speculation when you walk in ,

and seeing a Model thats good enough and asking the shop if they can get it in an abnormally large size ..