[header] How to answer a question on stack overflow [title] Visit the stack overflow website. [title] Click on questions. [substeps] You can then sort by newest, featured, frequently asked, questions that need voting, questions that are active, and questions that don't yet have an answer. 
If you don't find a question that you want to answer, consider searching by tag instead. By searching for a particular tag, you can find questions that are best suited to what you know a lot about.