if you cant read music give up now....... only joking, nothing wrong with hearing a tune to learn it, thats what most Irish musicians do. Reading music isnt hard believe it or not, I taught myself while learning fiddle, get the books I mentined in a previous post, dont get discouraged immediately, everyone, and I mean everyone struggles at first. In themusic it does tell you were to place your fingers , you just have to learn, its a complex thing to try to explain, and a lot easier if you can see how its done on paper. I can read music but I find it a lot easier to play if I hear the tune first, what you are talking about is sight reading, most people, me included thought that when a musician puts a piece on his stand he can immediately play it, its not the case, you have to study the music, it doesnt mean you are not a musician if you cant read music,  but it does make it a lot more difficult with violin, personally I find the way music written is beautiful, its a language that appears magical to those who dont read, but as I said it isnt that hard. I took up violin because even after playing other instruments for many years i felt a fraud, not a real musician, well now I am, lol get the books I mentioned they are cheap and excellent trust me. dont worry about playing higher up the neck, you learn first position first once you have that things start to become clearer, the Applebaum books take you right from the start, have simple tunes, and teach you absolutely everythig you need to know from not being able to play anything at all, violin as I have told you is an extremely difficult instrument no point lying, but it also extremely satisfying, imagine your friends faces when you put your first piece of music on your stand and play it for them.   

 Dont expect instant results, violin takes time and dedication, but with practice you can be knocking out tunes quite quickly, stick at it, your one of us now.😎

https://www.google.com/url?sa=.....lytog2ppAF

this is just what you need, this link if you copy and paste will take yutoa free download of violin scales a similar to how you learn blues scales, shows yuo were to put your fingers and the name of the notes