In the evolving field of AI, integrating machine learning (ML) into products presents challenges like overfitting, where a model performs well on training data but poorly on unseen data. This tutorial series aims to assist ML-curious engineers in tackling such issues using tools like Ludwig and Predibase. Overfitting is identified by discrepancies between training and validation metrics, typically visible in learning curves. Preventing overfitting involves modifying the training set or regularizing the model. Techniques include data augmentation, weight decay, L1 and L2 regularization, dropout, smaller batch sizes, early stopping, and normalization. Although overfitting indicates a model's lack of generalization, it can signal potential for improvement through regularization, ultimately enhancing model performance and meeting quality criteria.