In re the question of what to buy in the way of Renaissance books: I'd say any and all books in the I Tatti Library, published by Harvard UP, which includes good translations of crucial Renaissance Latin texts by Petrarch, Valla, Ficino, Alberti, Polydore Vergil, Leonardo Bruni -- facing page Latin and English, somewhat on the Loeb model, excellently edited and beautifully printed (also not too expensive, given what they are). KG