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:

D            D
Silent night, holy night
A            D
All is calm, all is bright
G               D
Round yon Virgin Mother and Child
G             D
Holy Infant so tender and mild
A7                D
Sleep in heavenly peace
D       A7       D
Sleep in heavenly peace
D            D
Silent night, holy night!
A               D
Shepherds quake at the sight
G                  D
Glories stream from heaven afar
G                  D
Heavenly hosts sing Alleluia!
A7                     D
Christ, the Saviour is born
D          A7         D
Christ, the Saviour is born
D            D
Silent night, holy night
A           D
Son of God, love's pure light
G                 D
Radiant beams from Thy holy face
G               D
With the dawn of redeeming grace
A7                  D
Jesus, Lord, at Thy birth
D     A7           D
Jesus, Lord, at Thy birth