The first Chapter Approved, the Red Compendium, the Golden Compilation, 3rd edition Chapter Approved books and the current, 2017 one with some gadgets.
To make small, round shapes out of cardboard use an office hole punch (available also with funny hole shapes nowadays) or better still a DIY punching tool used to make holes in leather belts and the like »
Many players magnetise their models to have an option to change their weapons. But even if you're a hobbyist keeping faithful to one model configuration, you may benefit from magnetising some parts »