L2 learning, which stands for second language learning, refers to the process through which individuals acquire proficiency in a language that is not their native language. This field of research examines the cognitive, social, and linguistic factors that influence how individuals learn and use a second language. Researchers in this area may investigate language acquisition theories, methods of language instruction, language transfer, language aptitude, and the impact of individual differences on L2 learning outcomes. The goal of L2 learning research is to better understand the complexities of acquiring a new language and to develop effective strategies for teaching and learning second languages.