This document provides Spanish expressions and examples using the preposition "por" and "para", including: 1) Common expressions using "por" such as "por ahora" (for now), "por lo menos" (at least), and "por supuesto" (of course). 2) Uses of "por" to indicate motion, location, duration, reason, object, and means. 3) Uses of "para" to indicate destination, deadlines, purpose with infinitives, recipients, and comparisons. 4) Example sentences using these prepositions.