DeepSeek Tutorial 2026: Complete Guide from Sign Up to Advanced Use

DeepSeek is the best free AI in 2026. It excels at reasoning, coding, and analysis — and it's completely free with no usage limits.

Getting Started

Access: chat.deepseek.com (no sign-up needed for basic use)
App: iOS and Android app stores

You don't need a VPN, you don't need a foreign phone number, and you don't need to pay.

Key Strengths

• Reasoning: Best-in-class logical reasoning
• Coding: Excellent code generation and debugging
• Math: Handles complex mathematical problems
• File analysis: Upload PDFs, Word docs, Excel files
• Chinese: Native-level Chinese understanding

How to Use

For Programming

Write a Python script that:
1. Reads a CSV file
2. Cleans missing data
3. Generates summary statistics
4. Exports as JSON

Add error handling and comments.

For Document Analysis

Upload a PDF and ask:
- "Summarize this document in 3 bullet points"
- "What are the key risks mentioned?"
- "Extract all data tables from this report"

For Learning

• "Explain quantum computing using an analogy"
• "Create a study plan for learning Python in 4 weeks"
• "Test my knowledge of machine learning concepts"

Pro Tips

1. Enable web search for current information (knowledge cutoff: May 2025)
2. Upload files for document analysis
3. Use specific prompts for better results
4. It's free and unlimited — no need to ration your usage

DeepSeek vs Other AIs

Summary

DeepSeek is the best free AI for users who:
- Don't want to pay
- Don't want to use a VPN
- Need strong reasoning and coding
- Want unlimited usage

Just open chat.deepseek.com and start asking questions.