This set of learning modules was developed during a project to deliver workplace literacy instruction to individuals employed in the more than 50 businesses related to the activities of the Port of Baltimore. It is intended to prepare students for the Customs Brokers examination within a 6-week course period. Actual material from past Customs Brokers examinations and the publication "The Harmonized Tariff," which customs brokers use to find and rate the price of goods, is included throughout the modules. The first module contains a preassessment designed to evaluate students' existing knowledge about customs work and their learning styles. The following topics are covered in the modules 2-6: technical reading and reading comprehension, grammar, punctuation, complex sentences, and test strategies. Each module contains objectives, procedures, student handouts, and learning activities/grammar exercises. Appendixes constituting approximately 50% of the document contain the October 1992 Customs Brokers examination and answers and answers to all exercises included in the learning modules. (MN)