I use the 5th fret tuning method. You get the low string tuned to an E pitch from a piano or pitch pipe and then put your finger down in the 5th fret and play it -- that is what the next sting should sound like. When string 2 is in tune then hold *it* at the 5th fret and that's what the next string should sound like, etc.... But the details. One of the strings has to be held at fret 4 not 5. I was holding the 5th string at fret 4 and making the 6th sting sound like that. But I should have held the 4th string at the 4th fret and the 5th at 5 so I ended up having two strings wrong, 5 and 6. So here is the mnemonic:
With the 5th fret tuning use the 4th at 4th. and the rest at the 5th
Tune the first (or hope it's close).
Hold the 1st at the 5th to tune 2
Hold the 2nd at the 5th to tune 3
Hold the 3rd at the 5th to tune 4
Hold the 4th at the 4th to tune 5
Hold the 5th at the 5th to tune 6