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Gas

The fee required to perform a transaction or execute a contract on the Ethereum network.

Every operation on Ethereum — a transfer, a swap, a contract deployment — consumes gas, paid in ETH. Fees rise with network congestion, which is why many apps also use cheaper networks or Layer 2 rollups.

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What is gas in Ethereum? →

Ethereum hub →

Ethereum Basics course →

MORE TERMS

Blockchain Bitcoin Ethereum Stellar Smart Contract Decentralized Application (DApp)Decentralized Finance (DeFi)Web3

EduNode

Learn blockchain development and practical IT skills

EduNode is an educational platform for becoming a blockchain developer. Hands-on courses cover Stellar, Web3, Soroban smart contracts, Ethereum, and Hyperledger, alongside self-paced masterclasses in Python, SQL, JavaScript, AI workflow automation, cybersecurity, networking, Docker, Git, data analysis, and Web3 fundamentals.

What is EduNode?

A learning platform that combines written lessons, interactive coding challenges, quizzes, and verifiable certificates. It is built for beginners who want practical, project-based paths into blockchain and IT careers.

What can you learn?

Masterclasses — fifteen paths, 150 lessons: Python, SQL, JavaScript, Git, AI automation, cybersecurity, networking, Docker, data analysis, IT support, stablecoins, Ethereum, Stellar, zero-knowledge proofs, and crypto fundamentals
Blockchain courses — Stellar, Web3, Soroban, Ethereum, and Hyperledger fundamentals
Guides and articles — wallets, stablecoins, smart contract security, DeFi, tokenization, and developer roadmaps
Web3 glossary — plain-language definitions, each on its own page

How much is free?

The first two lessons of every masterclass (20%) are free without an account. The remaining lessons and final projects are included with a Pro membership.

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