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:

B            B
Silent night, holy night
Gb            B
All is calm, all is bright
E               B
Round yon Virgin Mother and Child
E             B
Holy Infant so tender and mild
Gb7                B
Sleep in heavenly peace
B       Gb7       B
Sleep in heavenly peace
B            B
Silent night, holy night!
Gb               B
Shepherds quake at the sight
E                  B
Glories stream from heaven afar
E                  B
Heavenly hosts sing Alleluia!
Gb7                     B
Christ, the Saviour is born
B          Gb7         B
Christ, the Saviour is born
B            B
Silent night, holy night
Gb           B
Son of God, love's pure light
E                 B
Radiant beams from Thy holy face
E               B
With the dawn of redeeming grace
Gb7                  B
Jesus, Lord, at Thy birth
B     Gb7           B
Jesus, Lord, at Thy birth