This thesis aims to think of the second-hand book as material object inserted in an urban circuit. Traversing your way and drawing a cultural map, through fieldwork, the concepts of profession or trade, consumption, exchange, heritage, economic and symbolic value, order and disorder, rarity, time and property are highlighted. Critical approaches question the collaborative consumption movements and the linking of the old book to online selling sites, so book uberization is an expression created in this thesis to think about part of the circuit involving the internet. The city is occupied by books and booksellers in circular dynamics: they travel endlessly to and fro through traditionally known and circumscribed places; from the garbage to the rare books auction. Antiquarian bookstores are inhabited by masters and apprentices transmitting the craft among family members; on the other hand, the shopping chão, sidewalks and fairs (flea market) reveal elements of informality and economic and spatial indeterminacy, pursued by the government. The used book has marks of human and circumstantial interventions - scribbles, torn, collages, signatures, dedications - that give it the signs of value. It s important for circuit members to identify these marks in order to redistribute them through the elaboration of specific descriptions and arrangements for each category of used book. Bibliophiles are consumers of old books, booksellers are consumers of other booksellers in different instances, garbage collectors receive books from those they abandon and then sell to booksellers that they offer to books collectors, they can once again abandon books on the streets or in the garbage, then the cycle is renewed in a multi-sited cartography.