This pilot study provides a preliminary account on students' attitudes toward using specialized corpora in English for specific purposes (ESP) classes. Learners (N=39) were introduced to the EcoLexicon corpus and trained to use its basic query tools. The rationale behind this activity was to introduce learners to contextualization patterns and genre-specific features of the professional target language, which in its turn would ensure acceptability and appropriateness of their linguistic choices. The learners were offered a series of guided and independent tasks on terminology disambiguation and corpus-assisted speech production. At the end of the semester a survey was administered to the students to assess their perception of hands-on corpus experience. Descriptive statistics show preliminary evidence that corpus tools provide illuminating data, foster understanding of nuances within synonymous groups of words, and increase overall language awareness. However, hands-on Data Driven Learning (DDL) experience presented a few challenges which, however, may be remedied by careful design of teaching materials and assignments. [For the complete volume, "CALL for Widening Participation: Short Papers from EUROCALL 2020 (28th, Online, August 20-21, 2020)," see ED610330.]