Let's Build It: AI Chatbot with RAG in .NET Using Your Data
Build a Retrieval-Augmented Generation (RAG) chatbot that can answer questions using your data.
Actionable knowledge
We designed Dometrain courses to teach developers actionable skills and real-world practices. We go beyond the documentation and teach techniques you would only know about by building real-world systems and supporting them for years. We know what works, and we know what doesn't.
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Who uses Dometrain?
Software engineers from the biggest companies in the world use Dometrain as part of their training to enhance and improve their skill sets. Whether that's programming, architecture, or management, big tech companies are choosing Dometrain's high-quality training for their employees' learning and development.
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Featured Blogs
What's new in C# 14
This guide covers every new C# 14 feature, explains its benefits, and provides practical code examples to help you navigate how you can use them.
Setting Up Your Machine for .NET Development
Get started with .NET development by setting up your workstation. Whether that's Windows, macOS or Linux, you can follow these steps to get coding.
What is Asynchronous Programming in C#?
Async code lets your app handle more work without blocking threads. In C#, async/await is the way to write non-blocking I/O that still reads nicely.
You're in good company
Dometrain courses are widely used by industry professionals.
99%+
More than 99% of the students that completed a Dometrain course were satisfied with the material and the delivery
60K+
With more than 60.000 happy students it is safe to say that you are in good company!
1K+
More than 1000 companies are using Dometrain courses as part of their training for their engineers
What our customers are saying
I really like the way Nick covers programming topics on YouTube, so when I saw he had courses available, I went for them (Zero to hero API and DI courses). Not going to lie, initially, I thought the price was a little expensive, but I still went for it. After going through them, I now believe they are SO CHEAP FOR THE VALUE. There is so much content packed into them, but the real gem is the insider professional knowledge and tips he shares. Overall, 100% recommend.
Gwyneth Peña-Siguenza
Cloud Advocate @ Microsoft
As always Nick makes the concepts so simple for anyone to grasp. The way he showcases the unit testing techniques, by following practical examples of day to day problems that engineers are facing, is truly remarkable. Thanks Nick. Keep rocking and keep coding!
Orestis Meikopoulos
Azure Service Engineer @ Microsoft Nick's course are very easy to understand, they cover things in a very efficient manner, and the content is easy to find if I ever need to review something. Nick includes the sample code from the lessons broken up based off of how far you are into the courses as well, this make it easy to quickly set up and follow along from any part of the course. Overall I have to say Nick is the best teacher I have ever relied on to learn from beginner to expert.
Darnell Williams
Junior Developer @ EightBot © 2025 Dometrain. All rights reserved.
