How to tune my guitar?

Question

I am on my 2nd day of teaching myself guitar online (with my brothers guitar) and its out of tune today. my brother used to use his tuner but put it on a special "pitch" right now the tuner is on 140. what do i set it to? when i learn chords they are all out of tune because my strings dont match the teachers.

Answer 1

If you mean _440_ that is an "A" on the scale, OTOH, 140 would be the quarter-step between C# and D.

EDIT:  I just thought..that would be "A" on the 5th fret 1st string for the A=440.  Get one string tuned and then tune the rest from that one.

The big A (5th string) should be 110.

Answer 2

well if you at least one string tuned then you put your finger on the 5th fret and then match the same note.  When you get to the g-string put your finger on the 4th and then the 5th again for the little e