Extremely easy to use, this was a fun activity with my 4yo who is a chocolate fiend and wanted a chocolate making 'toy' set from the telly. I don't have a clue how to temper chocolate so we just melted a good quality 100g bar and took turns pouring it into the moulds, left to cool, then refrigerated, and out they popped fully detailed and looking brilliantly cute. I'm only marking this down one star because you can only make four chocolates and one lolly per average sized bar of chocolate, which doesn't go very far, especially if you wanted to make chocolate gifts.