Network Training
- Blockchain basics
- Node roles
- Consensus mechanisms
- Decentralized records
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Start Free LessonWeb3 & DeFi
You’ve Got Crypto — Now What?
The Financial System Without a Bank
Let’s go back to our website - the one where we watch our Bitcoin block tower in real time! 🧱 For creating an empty box, the miner receives 6.25 BTC at the current moment. 💡 This amount changes over time - it gets cut in half approximately every four years (a process called halving). 🧾 Total Fees - this is how much the miner earned from all the transactions packed into that block. 📦 The table also shows different box parameters, like: ⏱️ How long it took to find the block 📏 The size of the box (in bytes) 🧮 The number of transactions ✅ In other words: we see everything!
How do new coins appear in Proof of Stake (PoS)?
Understand crypto — no hype
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My Lessons
Basics of Blockchain
Decentralization
The Wallet Illusion
Coins vs Tokens
Web3 & DeFi
Liquidity

In the appExplain how blockchains and wallets define ownership.
Assess tokenomics before hype.
Balance your portfolio through fear and greed.
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11 courses
Basics of Blockchain
What blockchain really is, where coins come from, and why this system changed money forever.
Decentralization
The invisible system of nodes and consensus that keeps blockchain alive, secure, and independent.
The Wallet Illusion
Where your crypto lives, what a wallet actually controls, and the one mistake that can cost you everything.
Coins vs Tokens
The difference between coins and tokens, how blockchains connect, and what really happens in your first crypto buy.
Web3 & DeFi
What you can do with crypto once you own it, from lending and swapping to earning and using finance without banks.
Liquidity
The liquidity that powers DeFi swaps, fuels earnings, and keeps the whole system alive.
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Yes. The path starts with blockchains and nodes before moving into wallets, DeFi, project analysis, and portfolio rules.
No. This direction teaches crypto concepts and decision frameworks. It offers no picks, predictions, or return claims, and it does not manage your money for you.
No. You do not need coding experience. The material explains networks, wallets, consensus, and tokenomics through the decisions a crypto participant faces.
Yes. You examine private keys and seed phrases, then trace DEX swaps and liquidity pool mechanics without funding a wallet as part of the training.
Yes. You earn a named certificate inside Astra Trainer after passing the final exam. The certificate is verified by Astra and is not professional accreditation.
Lessons are available in eight languages: English, Spanish, German, French, Italian, Polish, Portuguese and Russian, and you can cancel anytime. Stripe handles checkout, and your subscription works on phone and web.
Explain the crypto stack and assess projects before fear or greed sets the pace.
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