It is important for your child to have a guitar of a suitable size.
Either ½ or ¾ size are generally best. 1/2 size is great for younger kids with smaller hands. 3/4 would generally be better for P6/P7.
Gear 4 Music offer a good selection. The packs with some picks and a bag are useful. We will not be using any of the books that come with the guitars.
If possible, it is advisable to visit a dedicated music shop where your child can try both sizes to see which they are most comfortable with.
A passed down full size acoustic guitar is unsuitable as your child will most likely not be able to see over the top of it!
A nylon strung guitar is recommended for children who
might be a bit averse to pain - steel strings sound better
but hurt little fingers :-)