Guide · Technology
How to Set Up a Password Manager Without Locking Yourself Out
Choosing an app is only the beginning. You also need a strong master passphrase, MFA, an emergency kit, and a recovery plan for a lost device.
Author
Max
Author and editor at RozumTech, covering practical AI, digital tools, and online security with a focus on clear explanations and verified sources.
Guide · Artificial Intelligence
Local AI Models: Privacy, Hardware, and the Real Tradeoffs
Running a model on your own computer can give you more control over data, but it does not make the entire workflow automatically private, secure, or free.
Analysis · Artificial Intelligence
What Is RAG? How AI Answers Questions From Your Documents
RAG retrieves relevant passages from selected sources and places them in the model’s context. Understand indexing, retrieval, citations, and the mistakes that still happen.
Analysis · Artificial Intelligence
What Are AI Agents, and When Are They Actually Useful?
An AI agent does more than reply in a chat: it plans steps, selects tools, and takes actions. Learn where agents help, where they fail, and how to keep control.
Guides
How to Work With PDF Files Using AI Without Missing Important Details
A safer workflow for contracts, reports, and manuals: prepare the file, ask precise questions, verify quotations, and protect confidential information.
Guides
How to Write AI Prompts: A Simple Formula, Examples, and Common Mistakes
An effective prompt is not a magic phrase. Learn to specify the goal, context, constraints, output format, and checks that make an answer useful.
Review · Tools
NotebookLM vs. Perplexity: Which Is Better for Working With Sources?
One tool focuses on your own document set; the other searches the web. See how that difference affects research, citations, and source verification.
Review · Tools
ChatGPT vs. Gemini vs. Claude: How to Choose for Your Workflow
Compare practical workflows rather than marketing claims: writing, file analysis, web search, integrations, privacy, and the cost of a wrong answer.
Guide · Work & Income
How to Calculate Whether a Paid AI Tool Is Worth the Cost
Calculate the full subscription cost, time saved, review effort, and break-even point to decide whether a paid AI tool genuinely pays for itself.
Guide · Work & Income
AI for Freelancers: A Workflow You Can Confidently Show Clients
Use AI for research, drafts, and quality control without exposing confidential data or giving up responsibility for the final client deliverable.
Guide · Technology
AI Phishing and Voice Cloning: How to Recognize a Scam
A scam email or call can sound convincing. Learn the warning signs and a verification routine that still works when criminals clone a familiar voice.
Guide · Technology
What Is a Passkey, and Can It Replace Your Password?
Learn how passkeys work, why they resist phishing, where they are stored, and how to recover access after losing a phone or changing platforms.