1. Install Mongoose: `npm install mongoose`.
2. Connect to MongoDB: `mongoose.connect(uri, options)`.
3. Define a schema: Create a Mongoose schema representing the data structure.
4. Create a model: Compile the schema into a Mongoose model.
5. Perform CRUD operations: Use the model to create, read, update, and delete documents.
6. Handle relationships: Define relationships between models using `ref`.
7. Implement validation: Add validation rules to the schema to ensure data integrity.