Learning Articles and Videos | Let's Learn
Browse published articles, YouTube playlists, video explainers, and modern learning resources from Let's Learn.
How to use the learning library
Choose an article when you need a clear explanation, a practical troubleshooting workflow, or focused interview revision. Every published guide is organized around a real learning goal rather than a generic keyword, and related pages help you continue into the surrounding subject.
Start with the summary to confirm the level and purpose. Read the worked examples and safety notes, try the commands or exercises in a controlled environment, and then use the related topic or quiz to check whether you can apply the idea without copying the answer.
Published articles, videos, and playlists
- From Tokens to Vectors: How Vector Databases Give LLMs Practical Memory
A practical guide to embeddings, hybrid RAG, BM25, HNSW, DiskANN, reranking, and choosing the right vector database for production.
- How to Diagnose CPU Bottlenecks and Memory Pressure in Linux
A beginner-friendly, production-safe guide to finding out whether a slow Linux server is struggling with CPU, memory, storage, or a runaway process.
- Why Does Your Resume Keep Getting Rejected in 2026?
A practical guide for freshers and professionals on ATS rejection, resume keywords, clean formatting, measurable impact, and how Axein Resume Review…
- The AI Cloud Surge
How Generative AI Workloads Rewrote the Architecture and Economics of the Big Three Hyper- scalers
- How to Explain Troubleshooting in Interviews
Learn how to turn raw technical activity into stronger interview answers that sound structured, practical, and credible.
- Linux Logs and Service Checks for Support Engineers
A practical guide to the Linux commands and checks that help support engineers move faster during service-related incidents.