A lot of those Level 1 items are Master Recipe items, which you need the Master books for. You can get the first couple from a vendor in Mor Dhona by trading in materia you get from Desynthing. After that, you get them by buying them for white crafting scrips at the various collectible merchants in the major cities. There are currently up to, I believe, level 8 Master crafter recipes that you can get the books for.