Okay, heres the point wher ei think i am way over my head, but i'll persevere and hopefully make a decent bass!

Heres the question, I am making a 34" bass guitar, but and unsure of how to measure this length. Is it to the start of the nut? Which part of the bridge to i start from?

All help is greatly appreciated.

It sounds like you haven't gotten a book. You should seriously consider doing so. I was able to borrow the Hiscock book from my local library. Your question is a point of basic understanding in instrument design, so it's quite likely that there are several other things you don't know, that may spoil your build.

34" is the distance from the point the string leaves the nut (the edge facing towards the bridge), to the position where the string hits the bridge saddles, before the saddles are adjusted backward for intonation.

I have a book, but this is the one point it didnt touch on, and I knewit was from the bridge to the nut, just not the finer specifics of it.

Thanks for the reply, it will prove very helpful :)