Like on my electronic tuner I Have C3 C4 C5 E3 E4 etc so what numbers on notes am I supposed to tune my guitar too, I keep breaking,and loosening my strings ._.
E2 is the bottom (fattest) string, followed by A2, D3, G3, B3 and the thin E is E4. However, on a guitar tuner, there usually is a 'guitar setting' which recognises the actual open string notes. The thing to be very careful of, as a beginner, is that an E note in one octave can sound like a different E. Indeed, to a tuner, play an E and it'll recognise E. Play a different E and it'll still tell you it's E. Obvious, maybe, but by then, you could have a string an octave too high. It happens !