GUITAR TABLATURES

Tablature is a form of musical notation, which tells players where to place their fingers on a particular instrument rather than which pitches to play. Tablature is mostly (but not exclusively) seen for fretted stringed instruments, in which context it is usually called tab for short (except for lute tablature). It is frequently used for the guitar, bass, lute, archlute, theorbo, angelique, mandora, gallichon, and vihuela, but in principle it can be used for any fretted instrument.
Guitar tab consists of a series of horizontal lines forming a staff (or stave) similar to standard notation. Each line represents one of the instrument's strings therefore standard guitar tab has a six-line staff and bass guitar tab has four lines. The top line of the tablature represents the highest pitched string of the guitar. By writing tablature with the lowest pitched notes on the bottom line and the highest pitched notes on the top line of the tablature follows the same basic structure and layout of Western Standard Notation.
The following examples 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 etc. The numbers that are written on the lines represent the fret used to obtain the desired pitch. For example, the 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 (first 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.
Various lines, arrows and other symbols are used to denote bends, hammer-ons, trills, Pull-offs, slides, and so on. Guitar tab is not standardised and different sheet music publishers adopt different conventions. Songbooks and guitar magazines usually include a legend setting out the convention in use.

TAB NOTATION - THE BASICS
TAB is simple to read, and should be simple to write if you want to submit a song you have worked out yourself. The idea is this :
You start out with 6 lines (or four for bass). These correspond to the strings of the instrument. The top line is the highest pitch string, and the bottom line is the lowest pitch string. Below is a blank bit of TAB with the string names at the left.
E----------------------------------------------------------------
B----------------------------------------------------------------
G----------------------------------------------------------------
D----------------------------------------------------------------
A----------------------------------------------------------------
E----------------------------------------------------------------
Numbers are written on the lines to show you where to fret the string with the left hand. If a zero appears , this means play the open string. Like standard musical notation, you read from left to right to find out what order to play the notes. The following piece of TAB would mean play the sequence of notes (E F F# G G# A) on the bottom E string by moving up a fret at a time, starting with the open string.
E----------------------------------------------------------------
B----------------------------------------------------------------
G----------------------------------------------------------------
D----------------------------------------------------------------
A----------------------------------------------------------------
E---0--1--2--3--4--5---------------------------------------------
OK so far ?
Here we have notes being played one at a time. If two or more notes are to be played together, they are written on top of one another, again just like standard notation.
In the next example we have a G bar chord.
E----3------------------------------------------------------------
B----3------------------------------------------------------------
G----4------------------------------------------------------------
D----5------------------------------------------------------------
A----5------------------------------------------------------------
E----3------------------------------------------------------------
So this means play all these notes together as a chord.
You might see the same chord written like this :
E--------3--------------------------------------------------------
B-------3---------------------------------------------------------
G------4----------------------------------------------------------
D-----5-----------------------------------------------------------
A----5------------------------------------------------------------
E---3-------------------------------------------------------------
Which would mean strum the same shape starting at the bottom string, so that each string is hit slightly later than the last string, but all notes will ring together. Below is am example of the same shape again, but now the gaps between the notes are bigger - so you would probably pick the strings separately instead of slowly strumming the shape.
E------------------3----------------------------------------------
B---------------3-----3--------------------------------------------
G------------4-----------4-----------------------------------------
D---------5-----------------5--------------------------------------
A------5-----------------------5----------------------------------
E---3-----------------------------3--------------------------------
You might ask - How do I know how fast or slow to play this ? Are all the notes supposed to be the same length ?
This is where TAB differs from standard notation. Most often TAB will *not* give you any information on the note lengths. It is usually left up to you to listen to the song to pick up the rhythm.
However - don't despair. TAB should give you some indications of timing. In the example above all the notes are evenly spaced so you can reasonably assume that the notes are the same length (maybe all eighth notes or quavers) but this may not always be true - it depends on who wrote the TAB.
As a general rule, the spacing of the notes on the TAB should tell you which notes are the long ones, and which are the short and fast ones, but obviously it won't tell you if a note is a triplet or anything like that. Again, this will depend strongly on the person who wrote the TAB.
As an example, here are the first few notes of the American National Anthem in TAB. You should see fairly clearly that the different spacing corresponds to the different note lengths.
E-----------------------0--------4--2-0--------------------------
B---0--------------0---------------------------------0-----------
G------1------1----------------------------1----3----------------
D--------2-------------------------------------------------------
A----------------------------------------------------------------
E----------------------------------------------------------------
Obviously it will be a lot easier to play the TAB for a song you know well than for a song you've never heard of because you will already be familiar with the ryhthms of the familiar song.