CoursesBlockchain 101: Architecture and Mechanics
beginner
Free Course

Blockchain 101: Architecture and Mechanics

Build a solid understanding of how blockchains work — from blocks and chains to hashing, nodes, and distributed consensus. No coding required. The most thorough beginner blockchain course available.

3 modules · 14 lessons12 hoursBy FTH Trading
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Course Modules

Module 01

Core Concepts

5 lessons

The building blocks of blockchain

1
What Is a Blockchain? The Definitive Explanation
20m
quiz
2
Hashing Functions: SHA-256 and Cryptographic Fingerprints
25m
quiz
3
Blocks, Chains, and Merkle Trees
22m
quiz
4
Nodes, Networks, and Decentralization
22m
quiz
5
Public and Private Keys Explained
20m
quiz
Module 02

Consensus Mechanisms

5 lessons

How blockchains agree on truth

1
The Byzantine Generals Problem
18m
quiz
2
Proof of Work: Mining, Energy, and Security
20m
quiz
3
Proof of Stake: Validators, Slashing, and Finality
22m
quiz
4
Delegated PoS and Other Consensus Variants
18m
quiz
5
The Blockchain Trilemma: Security, Scalability, Decentralization
25m
quiz
Module 03

Transactions and Wallets

4 lessons

How value moves on-chain

1
Anatomy of a Blockchain Transaction
20m
quiz
2
UTXO vs. Account Model
18m
quiz
3
Wallet Types: Custodial, Non-Custodial, Hardware
22m
quiz
4
Transaction Fees: Gas, Priority, and MEV
20m
quiz

Topics Covered

Blockchain
Infrastructure