This document introduces the Strategy Inventory for Language Learning (SILL), a self-assessment tool for students learning a second language. The SILL asks students to rate how true certain statements are of their own language learning strategies and behaviors, from "never true" to "always true." It is divided into five parts that cover cognitive, memory, compensatory, metacognitive, and affective strategies. Students are instructed to answer based on their own experiences and not how they think they should learn, as there are no right or wrong answers.