How to read tablature? 
    D                 Bm  A   D         A       D         Bm  A   D                                                                      
xA|-----------------|-----------------|-----------------|-----------------|
xE|-------3-2---0---|-----0---2-------|-0-2-3-0-2-----0-|-----------------|
xC|-----------------|-2-----------2---|-----------------|-2---1---2-------|
xG|-2---------------|-----------------|-----------------|-----------------|
                                                                       
    D                 Bm  A   D         A       D         Bm  A   D                                                                      
xA|-----------------|-----------------|-----------------|-----------------|
xE|-------3-2---0---|-----0---2-------|-0-2-3-0-2-----0-|-----------------|
xC|-----------------|-2-----------2---|-----------------|-2---1---2-------|
xG|-2---------------|-----------------|-----------------|-----------------|
                                                     
    A                 D           A     D       Bm        E       A                  
xA|-----------------|-----------------|-----------4-5---|-4---------------|
xE|-0-----2-3---0---|-2-----3-----0---|-2-3-------------|-----------------|
xC|-----------------|-----------------|-----------------|-----------------|
xG|-----------------|---------2-------|-----2---4-------|-----4---2-------|
             
    D                 Bm  A   D         G       D         Bm  A   D                                                          
xA|-----------------|-----------------|-----------------|-----------------|
xE|-------3-2---0---|-----0---2-------|---------------3-|-2---0-----------|
xC|-----------------|-2-----------2---|-----------------|---------2-------|
xG|-2---------------|-----------------|-4-4-4-4-2-------|-----------------|


Verse:
D                  Bm     A  D
Deck the hall with boughs of holly,
A           D     Bm A  D
Fa la la la la la la la la.
 D              Bm A  D
'Tis the season to be jolly,
A           D     Bm A  D
Fa la la la la la la la la.
A              D       A/Db
Don we now our gay apparel
D        Bm       E     A
Fa la la la la la la la la.
D                 Bm    A   D
Troll the ancient Christmas carol,
G           D     Bm A  D
Fa la la la la la la la la.
 
Interlude: | G D | Bm A D |
 
Verse:
D               Bm   A D
See the blazing yule before us,
A           D     Bm A  D
Fa la la la la la la la la.
D                    Bm  A   D
Strike the harp and join the Chorus.
A           D     Bm A  D
Fa la la la la la la la la.
A            D        A/Db
Follow me in merry measure,
D        Bm       E     A
Fa la la la la la la la la.
D               Bm    A   D
While I tell of Christmas treasure,
G           D     Bm A  D
Fa la la la la la la la la.
 
Interlude: | G D | Bm A D |
 
Verse:
D             Bm  A    D
Fast away the old year passes,
A           D     Bm A  D
Fa la la la la la la la la.
D                Bm   A   D
Hail the new, ye lads and lasses!
A           D     Bm A  D
Fa la la la la la la la la.
A              D       A/Db
Sing we joyous all together,
D        Bm       E     A
Fa la la la la la la la la.
D               Bm   A   D
Heedless of the wind and weather,
G           D     Bm A  D
Fa la la la la la la la la. 
 
Outro: | G D | Bm A D |