This is a really good introductory course. 
It's amazing that I can listen to this for free! 
It's much easier to understand when I see it in code than just reading it in a book.

Beginners to Spring can quickly learn the entire Spring web application development process by creating examples.

Spring for Beginners - Learn Spring Boot, Web MVC, and DB Access Technology with Code

hahaha thank you JO for listening so hard! Fighting till the end^^

입문

초급

중급이상

자바

Java

스프링

Spring

모델 뷰 컨트롤러

스프링부트

Spring Boot

Course Introduction

Project Settings

Spring Web Development Basics

Member Management Example - Backend Development

Spring Bean and Dependency

Member Management Example - Web MVC Development

Spring DB Access Techniques