i need to make cables to connect my guitar to amps.
im not really too sure what to look for and where
i've heard canare are really good for cables n switchcraft for plugs but dont really know where to go n other details
also ive heard that there are imitations of those brands. how do u spot the diff?

search them in the garage sales under music and audio related accessories threads... u might find a seller or two or maybe more...

about the immitation issues i think u can ask PcWork ... he's usually in the audiophiles threads