How to read tablature? 
TAB:

xA|------0----|-----------|------0----|-----------|--5---5----|--2--------|
xE|--3-----3--|--0--------|--3-----3--|--0--------|-----------|-----------|
xC|-----------|-----------|-----------|-----------|-----------|-----------|
xG|-----------|-----------|-----------|-----------|-----------|-----------|

xA|--3---3----|-----------|--0---0----|--3---2-0--|------0----|-----------|
xE|-----------|--3--------|-----------|-----------|--3-----3--|--0--------|
xC|-----------|-----------|-----------|-----------|-----------|-----------|
xG|-----------|-----------|-----------|-----------|-----------|-----------|

xA|--0---0----|--3---2-0--|------0----|-----------|--5---5----|--8---5----|
xE|-----------|-----------|--3-----3--|--0--------|-----------|--------7--|
xC|-----------|-----------|-----------|-----------|-----------|-----------|
xG|-----------|-----------|-----------|-----------|-----------|-----------|

xA|-----------|--7--------|--3--------|-----------|-----------||
xE|--8--------|-----------|------3-0--|--3---1----|-----------||
xC|-----------|-----------|-----------|--------2--|--0--------||
xG|-----------|-----------|-----------|-----------|-----------||


CHORDS:

A            A
Silent night, holy night
E            A
All is calm, all is bright
D               A
Round yon Virgin Mother and Child
D             A
Holy Infant so tender and mild
E7                A
Sleep in heavenly peace
A       E7       A
Sleep in heavenly peace
A            A
Silent night, holy night!
E               A
Shepherds quake at the sight
D                  A
Glories stream from heaven afar
D                  A
Heavenly hosts sing Alleluia!
E7                     A
Christ, the Saviour is born
A          E7         A
Christ, the Saviour is born
A            A
Silent night, holy night
E           A
Son of God, love's pure light
D                 A
Radiant beams from Thy holy face
D               A
With the dawn of redeeming grace
E7                  A
Jesus, Lord, at Thy birth
A     E7           A
Jesus, Lord, at Thy birth