Decentralized Application Development: Solidity, Web3, and React for Beginners — PickAClass
3.3 (3) ⏱ 2h 54m 📚 29 lessons 🎧 Audio version

Decentralized Application Development: Solidity, Web3, and React for Beginners

Build decentralized applications by writing Solidity smart contracts, testing with Mocha, and connecting them to modern React frontends.

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About this course

The blockchain industry is growing rapidly, yet transitioning from traditional web development to decentralized applications can feel overwhelming. This text-based course bridges that gap by guiding you step-by-step through the process of building, testing, and deploying your own functional Web3 applications. You will transition from a traditional developer to a decentralized application engineer. You will gain a deep understanding of blockchain fundamentals, learn how to write secure smart contracts on Ethereum, and connect them seamlessly to interactive React user interfaces. What you'll learn: - Understand foundational blockchain concepts, decentralized networks, and smart contract mechanics. - Write and deploy smart contracts using Solidity, incorporating modern security practices and gas optimization basics. - Test your smart contracts thoroughly using Mocha and modern testing frameworks to ensure reliability. - Integrate smart contracts with React frontends using Web3 libraries to read data and send transactions. - Implement ERC-20 token standards to manage digital assets within your applications. - Build a decentralized application featuring deposit, withdrawal, and reward mechanics. The course begins with foundational blockchain definitions and Solidity syntax before moving into automated testing. From there, you will explore frontend integration, learning how to connect user interfaces to the Ethereum network through written explanations, conceptual breakdowns, and practical code walkthroughs. This course is designed for web developers, software engineers, and programming enthusiasts who are new to blockchain development. No prior experience with smart contracts or Web3 is required, though a basic understanding of JavaScript and React will help you get the most out of the material. Start reading today to build your first fully functional decentralized application from the ground up.

What you'll get

  • 📜 Certificate of completion
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  • 📱 Phone or computer
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  • 💸 14-day refund
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  • Short & focused
    2h 54m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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PickAClass
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Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
Decentralized Application Development: Solidity, Web3, and React for Beginners
Skills demonstrated
Behavioral pattern analysis
Foundational
1.2 hrs
Decision-architecture frameworks
Proficient
1.4 hrs
A/B test design
Proficient
1.7 hrs
Behavioral copywriting
Advanced
1.9 hrs
P
PickAClass — Name Surname
Decentralized Application Development: Solidity, Web3, and React for Beginners
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

Reviews (3)

Miroslav Jelínek CZ
★ 3 · July 17, 2026

Hmm, I'm not sure this is for absolute beginners. It assumes a bit of prior knowledge that wasn't explicitly taught. Some examples were confusing.

Ethan Lee AU Verified learner
★ 3 · July 7, 2026

It's a decent introduction. Could benefit from more diverse examples and a slightly better flow between modules.

Harper Lewis AU Verified learner
★ 4 · June 16, 2026

This course exceeded my expectations. The real-world applications discussed are incredibly useful. Great job!

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