PES
EN English 한국어 日本語 中文 हिन्दी বাংলা اردو Español Português Français Deutsch Русский العربية Bahasa Indonesia Tiếng Việt ไทย Türkçe

How to enable notifications

Notifications are unavailable in this browser or on this address. Try a supported browser on the secure PES site.

If notifications are blocked, allow them in your browser settings.

  1. Open the site controls beside the address bar, or your browser’s site settings. Set Notifications for this site to Allow.
  2. In your device settings, allow notifications for your browser and check Do Not Disturb or Focus.
  3. Return to PES, reload the page, and use the bell to enable notifications.

On iPhone or iPad, add PES to your Home Screen, open it there, then allow notifications.

My learning progress
  1. How to use AI
  2. Terminal commands
  3. Advanced AI
  4. Vibe coding
  5. AI certification Getting ready
  6. Keyboard
See details
All AI lessons
Stage 2

Write and check a prompt

Learning goal

State the task, useful context, constraints, and a way to check the result.

A prompt is input that guides a model. Compare “Explain fractions” with “For a beginner, explain one half using a pizza example, then ask me one question without giving its answer.” The second request specifies an audience, an example, and a learning activity.

A closer look

A role can guide tone, but does not grant expertise or guarantee compliance. Ask for sources when needed and verify that they support the claim. Compare two prompts on the same examples. Share only necessary information; a clearer prompt can help, but cannot remove every model limitation.

Explain it yourself

Does “You are an expert” make an answer reliable?

Compare with an explanation

No. It can guide the style; evidence and testing are still needed.

You mark this yourself. Nothing is graded here.

Mark this step as understood?

This cannot be undone yet, so mark it only when you really understand.

Marked as understood

You mark this yourself. Nothing is graded here.

Sources and further reading

Guidelines

AI

AI Certification

Study

Vibe Coding

Game

Practice

Tutors

Chat

Forum

Create

Community

More

Glossary

Pick a word you don't know. You'll see a simple explanation and related terms.

No matching term yet.

Pick a term to see its explanation.