Acoustic Guitar Tab

This is where we explore guitar tab as it relates to acoustic guitar.
Let's get straight what an acoustic guitar is. The notes on the guitar are made by changing the length of the strings by pressing the strings against the frets with the left hand. The right hand makes the music by striking the strings with the finger tips or a plectrum.
An acoustic guitar doesn't need any help from an amp to make music. The acoustic guitar body does that.
If you decide that you want to play the acoustic guitar you are sooner or later going to be faced with the choice between learning to read music and learning to read tablature.
Basically tablature is a picture of the keyboard with the notes of the piece you're going to play indicated on the tab by fret numbers.
It takes a few minutes to get the hang of the basic idea of guitar tab, and any symbols you find on tabs that you don't understand you can research on the net. Also there's not a whole lot of music that you won't find written out in tab form.
Tablature is a fast way of learning music, and many musicians have never needed to learn conventional music, even after many years of guitar playing. If you include learning to read music in your plans for learning to play the guitar, you might find you will need a tutor to help you but tablature doesn't need a big explanation.
If you decide to just learn to read tablature you won't be able to pick up the music for a piano piece or a flute melody and pick out the tune because those dots on the page are going to be a mystery to you. So if you intend to be a versatile kind of musician, maybe you'd better take the bit between your teeth and learn music.
The other reservation regarding guitar tablature is that if you attempt to learn advanced classical or flamenco pieces with the help of tabs you need to already have a very good idea of what the piece sounds like because you are going to be working out the note values and rhythm for yourself. Also you will be working out your own fingering which, for all but the most straightforward pieces of music, is quite tricky. Fortunately there are tools like Power Tab Editor and TablEdit which will help you with this issue.
Here's a partial explanation of guitar tablature from http://guitar_tablature.totallyexplained.com/

Like standard notation, guitar tab consists of a series of horizontal lines forming a staff (or stave). Each line represents one of the instrument's strings, so guitar tab has a six-line staff, and bass guitar tab has four lines. Those new to tablatures may, if not told otherwise, initially be confused at the order in which the strings are written; rather than the top line of the tablature representing the top (thickest, lowest pitch) string of the guitar, the top line of tablature actually represents the bottom (thinnest, highest pitch) string of the guitar. So instead of tablature being an intuitive mirror image of your guitar neck, it actually is an "upside-down" image. (Hence the initial confusion for some) However, by writing tablature with the lowest sounding notes on the bottom lines and the highest sounding notes on the top lines of the tablature, it follows the same basic structure and layout of Western Standard Notation, making for simple and consistent reading & playing of guitar music while reading either tab or Standard Notation or both at the same time.

The examples below are labelled with letters on the left denoting the string names, with a lower-case "e" for the high E string. Tab lines may be numbered 1-6 instead, representing standard string numbering, where "1" is the high E string, "2" is the B string, and so on.

Numbers are written on the lines also, where each number represents a fret on the instrument. For instance, a number 3 written on the top line of the staff indicates that the player should press down at the third fret on the high E (bottom/thinnest) string (instead of the low E string, which is the top/thickest string). Number 0 denotes the nut - that is, an open string.

For chords, a letter above or below the tab staff denotes the root note of the chord.

Examples of Guitar Tab Notation:

The chords E, F, and G:

E|---0---1---3---
B|---0---1---0---
G|---1---2---0---
D|---2---3---0---
A|---2---3---2---
E|---0---1---3---
      E   F   G