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[TITLE]SIMPLE TUNING TECHNIQUE
To tune correctly our guitar, we can use the following method:

1)Tune the 5th string (A) with a diapason, or by the phone free signal (it is tuned as A!)
2)Play the 5th string pressing the 5th key to produce a D, and use it to tune the 4th string (same: D)
3)Play the 4th string on the 5th key (G) to tune the 3th string
4)Play the 3th string on the 4th key (B) to tune the 2th string
5)Play the 2th string on the 5th key (high E) to tune the 1th string
6)Play the 1th string (high E) to tune the 6th string (low E)
7)Verify the tune repeating all the passages and playing some simple chords, as Am, D+, E+ listening to the results. 
 
[IMG]acc.png 
This is the most simple method. To understand how it works we have only to look at the notes on the first part of the handle of the guitar: we know that the 5th string must be A and the 4th must be D, so let's start to try every key on the 5th string: A (free), A# (1th key), B (2th), C, C# and D (5th key). We just have discovered that there is a D on the 5th key of the 5th string, and the 4th string must be also a D.
 
The phrigyan scale in E tonality can be played using all the strings free and using the first 3 keys of the handle, and it is composed by the following notes: E, F, G, A, B, C, D. We'll fill every note position very easy just learning this scale as well. 
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