Look at Rule number 1

Rule number 1

The Ear is the Boss

I have trained and taught people who considered themselves to have no ear, and in some cases that seemed very true.  For example I have had some students who could not tell if one note was higher or lower in pitch than another, let alone if an instrument was out of tune, but after a short time of actually training and playing they could hear when the guitar was out of tune, I would wait sometimes to see if they noticed, and of course I was very pleased when they could tell the difference on their own.

One simple exercise that can help is to always practice (as this is a good warm up exercise too) a Major Scale.

The Major Scale is one of the main Keys to music, apart from training the fingers and also helping the ear to develope.

Look at Rule number 2

Rule number 2

Practical Theory

With practical theory there are some very basic things needed that one should know like chord structures on the instrument itself, for example how to make one chord shape that is a Major chord into a Minor chord.

Link 1

A - For a Practical Theory Module go to the link 1 below

Easy Practical Theory

It covers very good basic practical theory and how chords are made and more, it shows the chord formulas and you can easily see how one shape compares to another shape and what type of chord it is in all keys.  Plus there is a section on Scales

This Module in itself is a very good primer for any instrument, easy to use and understand and is FREE

B - For a Quick Chord Module

go to the link 2 below

Guitar Chords for Beginners

The Secret to Chords

Know your chord formulas, works for Keyboard too

Easy Guitar Chord Book for Beginners

With this Guitar Chord Book for Beginners not only do you have beginner open position chords in all 12 keys but you also learn about chord formulas so you can find chords in other positions for guitar for yourself

Plus you can find the Major Scale in all 12 keys for both Guitar and Keyboard and chords for Keyboard too

Link 2