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Qdrant Installation and Usage Guide: A Powerful Vector Database for AI and RAG Applications

By IT From Zero March 10, 2026

This article provides a detailed guide on how to install and use Qdrant, a powerful vector database, to build effective AI and RAG applications. I share practical experience after more than 6 months of deploying Qdrant in a production environment, analyzing its pros and cons, and providing sample Python code to help you get started immediately.

How to Install ComfyUI for Local AI Image Generation

By IT From Zero March 2, 2026

A practical guide to installing ComfyUI locally for AI image generation with Stable Diffusion — covering GPU setup, model downloads, configuration, and real-world monitoring. Drawn from 8 months of hands-on use.

Fine-tuning AI Models with Your Own Data: A Practical Guide from A to Z

By IT From Zero March 2, 2026

A hands-on guide to fine-tuning AI models with your own data using LoRA and QLoRA. From dataset preparation and LoRA adapter configuration to training with SFTTrainer, merging, and deploying a custom model for real-world use.

Machine Learning for Beginners: From Theory to Practice with scikit-learn

By IT From Zero February 28, 2026

A practical machine learning guide for beginners: set up a Python environment, train a classification model with scikit-learn, serialize it, and monitor data drift in production. Based on real-world experience integrating ML into a DevOps pipeline — including the painful lesson of neglecting a model for 3 months and watching it drift.