I bought this for my daughter, who was aged 8 at the time. Quite a lot of the projects require a craft knife, which was a bit unnerving at first because craft knives are very sharp, but we soon got the hang of it.
With this book, you will need a supply of coloured card (and a craft knife) - some of the projects need other stuff too (eg one involves cutting up a rubber and dunking the pieces into paint to make pictures by printing), but coloured card and a craft knife will get you started.
None of the projects we have done so far takes too long to complete - which is good, as my daughter is great at starting things and not so great at finishing them off. So far we have finished everything we've started in this book. I do find that I need to help her though, as she likes the end result to look like it does in the book, but she is only a beginner at this sort of art project.