This document provides an outline for a tutorial on ontology engineering and lexical semantics. The tutorial aims to teach participants how to build ontologies, tackle challenges in ontology engineering, and develop multilingual ontologies. It will include sessions on population ontologies, bank customer ontologies, legal person ontologies, ontology tools, and using existing linguistic ontologies like WordNets. Participants will learn about the Palestinian eGovernment interoperability framework called Zinnar and how to use ontologies in web services. The goal is to help participants gain knowledge and skills in ontology engineering, multilingual knowledge representation, and applying ontologies in eGovernment systems.