3-8: para decirte la buenaventura: to tell your fortune.
4-1: a todo trapo: under full sail (lit. rag), i.e. unrestrainedly.
4-2: si son de alegría: why! they are tears of joy. Si is often used to introduce an emphatic assertion. It may be translated by an expletive or omitted entirely. Cf. p. 45, line 31 and note.
4-3: tomado a este hombre: (a = from). The preposition a is regularly used with the value of the English from, after verbs like steal, deprive, buy, etc.
4-4: burro en pelo: a bare-backed donkey (pelo = hair).