I already have several video training from Galileo Press and am very happy with the training. This DVD does not unfortunately. Now you might think it's up to my computer. Do not do it, however. On other devices, this DVD is useless. The picture is full of artifacts and you can not see anything. The sound, however, is working properly. The DVD was subsequently returned and exchanged, hoping things will get better. Unfortunately, the replacement had the same defect and was therefore useless. But we say 'yes' all good things come in threes'. In this case not because the third delivery of this product could not be used.
The only positive about the whole thing was the delivery time. I never had to wait long for my defective goods. A fourth time but it is not, unfortunately, give. Shame
