How to read tablature? 
Chords used: C E7 A7 F G C G7
 
 
-Version 1-
 
xA|-----3---------------2---------------0---------------0--------|
xE|-0-----0---0----0------0---0----0------0---0----0------0---0--|
xC|---0-----0--------2------2--------1------1--------1------1----|
xG|--------------------------------------------------------------|
 
xA|-----0---------------2---------------3---------------2--------|
xE|-1-----1---1----3------3---3----0------0---0----1------1---1--|
xC|---0-----0--------2------2--------0------0--------2------2----|
xG|--------------------------------------------------------------|
 
 
-Version 2-
 
xA|-3----3----3----2----2----2----0----2----0----0----2-----0----|
xE|---0----0----0----0----0----0----0---------0----0----------0--|
xC|-0----0----0----2----2----2----1----1----1----1----1-----1----|
xG|--------------------------------------------------------------|
 
xA|-0----0----0----2----2----2----3----3----3----3----2----1-----|
xE|---1----1----1----3----3----3----0----0--3-3------------------|
xC|-0----0----0----2----2----2----0----0---------3----2----0-----|
xG|--------------------------------------------------------------|