C#
.NET Backend & APIs
Variables, types, and logic. The bedrock of everything.
Read the book to understand it. Then lock it in with practice exercises, right in your browser.
$49 a year, and your first year includes a free paperback, like C# Fundamentals. It ships free.
Pick a language. Each journey builds one concept on the last, from your first variable to a finished project.
Each one checks what you just read, right in your browser, with nothing to install. The book has you write and run real programs on your own computer, the way developers do.
Understand the concept from the book, in plain language.
Lock it in with hands-on exercises built from that chapter.
Track concepts mastered and earn a completion certificate.
Practice exercises work on any device, with nothing to install. Real programs run on your own computer, with the tools developers use.
Start with the language that fits your goal, then add another.
Finish a journey and earn proof you can share.
No ads, no upsells mid-lesson. Just you and the work.
Every book and audiobook on unQbd is included, not just coding. Tech, fiction, children's books, and audiobooks, all for one price.
The whole library plus practice exercises, for a fraction of a single coding subscription.
Competitor prices are individual annual plans, annualized from monthly where shown, as of June 2026.
Create a free account and read new books every week, no credit card. Upgrade any time.
Not to practice. The exercises work in your browser on any device. To write and run your own programs, you install free tools on your computer, and the book walks you through it.
C#, Python, JavaScript, Go, and SQL, with more on the way.
Yes. The journeys start from the foundations and build up one concept at a time.
Free gives you new books every week, no credit card. Premium gives you the whole library plus practice exercises and certificates, for $49 a year.
Yes. Cancel from your account settings and keep access through the end of your billing year.
Everything for $49 a year, plus a free paperback with your first year. Or start free with no credit card.
