For a free product, this has good production quality, but I do not see many things that would be original or captivating and neither do I understand why this has its own RPG system different from others (I have not seen anything to warrant this).
It's a bit of a mixed bag. Some modules are very limited with lots of samey monsters and empty rooms, others seem interesting but murderous...none of them is really what I would call perfect introduction to DnD. But it is still a bargain in this collection.