Write SQL queries to perform the following task:

My project is for the creation of a set of SQL queries to perform the task of data retrieval. The database consists of a small and simple size and complexity, and the queries must be compatible with MySQL. I need someone with the technical know-how and ability to create these queries for a successful outcome. Additionally, the queries must be structured correctly, taking into account the rules of the specific database system they are designed for. Furthermore, it would be beneficial if the person who takes this job is knowledgeable in SQL syntax and query optimization techniques. I'm looking for someone who has immediate availability and can commit to delivering the project in a timely manner. Thanks for considering my project!