Essential Free Programming Resources: Tutorials, Videos, Blogs & Communities

Online Text Tutorials

how2j.cn – https://how2j.cn/ – Comprehensive Java full‑stack tutorial. ★★★★★

w3cschool – https://www.w3cschool.cn/ – Front‑end and scripting language tutorials. ★★★★★

菜鸟教程 (runoob.com) – https://www.runoob.com/ – Similar to w3cschool, good for front‑end learning. ★★★★★

易百教程 – URL not provided – Broad range of tutorials. ★★★

码农教程 – http://www.manongjc.com/ – Numerous IT programming tutorials (Java, PHP, JavaScript, C, C++, HTML, CSS). ★★★

简单教程 – https://www.twle.cn/ – Front‑end, mobile, Java, .NET tutorials. ★★★

Break易站 – https://www.breakyizhan.com/ – Variety of programming tutorials (Java, front‑end, deployment). ★★★

C语言中文网 – http://c.biancheng.net/ – Focus on C language, also data structures, C++, Linux. ★★

并发编程网 – http://ifeve.com/ – Java‑centric site covering concurrency, NIO, JVM, frameworks. ★★

jenkov.com – http://tutorials.jenkov.com/ – High‑quality Java tutorials (foreign). ★★★

baeldung.com – https://www.baeldung.com/ – In‑depth Java tutorials (foreign). ★★★

Video Tutorials

Bilibili (B站) – https://www.bilibili.com/ – Large collection of programming video courses. ★★★★★

慕课网 (imooc) – https://www.imooc.com/ – Structured video courses, some paid content. ★★★★

中国大学MOOC – https://www.icourse163.org/ – Courses from top universities, not limited to CS. ★★★★

网易云课堂 – https://study.163.com/ – Some programming video tutorials. ★★★

实验楼 – https://www.lanqiao.cn/courses/ – IT technical courses. ★★

Technical Documentation & Tools

Java – https://www.java.com/zh_CN/, https://docs.oracle.com/en/java/javase/ – Official website and API docs. ★★★★★

Spring – https://spring.io/ – De‑facto standard for Java EE. ★★★★★

MySQL – https://www.mysql.com/ – Official MySQL site. ★★★★

MyBatis – https://mybatis.org/mybatis-3/zh/index.html – Popular Java persistence framework with Chinese docs. ★★★★

Vue.js – https://cn.vuejs.org/ – Leading front‑end framework, Chinese documentation. ★★★★

Linux – https://www.linux.org/ – Essential for backend developers. ★★★★

Git – https://git-scm.com/ – Version control system with Chinese docs. ★★★★

Dubbo – http://dubbo.apache.org/zh-cn/ – High‑performance Java RPC framework. ★★★★

Redis – https://redis.io/ – Popular NoSQL database. ★★★★

Chinese Blog Communities

CSDN – https://www.csdn.net/ – Largest Chinese tech blog platform. ★★★

博客园 (CNBlogs) – https://www.cnblogs.com/ – High‑quality technical blogs, low commercial tone. ★★★★★

掘金 – https://juejin.im/ – Beautiful UI, strong front‑end and interview content. ★★★★

简书 – https://www.jianshu.com/ – Mixed content, some technical articles. ★★★

思否 (SegmentFault) – https://segmentfault.com/ – Blog + Q&A community. ★★★

开源中国 – https://www.oschina.net/ – General tech blog community. ★★★

51CTO.COM – https://www.51cto.com/ – IT technology site. ★★

V2EX – https://www.v2ex.com/ – High‑brow community, Google login only. ★★

International Blog Communities

Stack Overflow – https://stackoverflow.com/ – Global Q&A for programmers. ★★★★★

dev.to – https://dev.to/ – International version of 掘金. ★★★★

DZone – https://dzone.com/ – Large online tech community. ★★★

Bytes – https://bytes.com/ – Developer‑focused discussion site. ★★★

Google Developers – https://developers.google.com/ – Official Google developer resources. ★★★

Open‑Source Communities

GitHub – https://github.com/ – World’s largest open‑source code host. ★★★★★

码云 (Gitee) – https://gitee.com/ – Chinese alternative to GitHub. ★★★★

Interview & Algorithm Practice

LeetCode – https://leetcode-cn.com/ – Classic algorithm problem site. ★★★★★

LintCode – https://www.lintcode.com/ – Similar to LeetCode. ★★★★

牛客网 (Nowcoder) – https://www.nowcoder.com/ – Interview preparation and coding contests. ★★★★

Specialized Technical Blogs & Resources

美团技术团队 – https://tech.meituan.com/ – High‑quality engineering posts. ★★★★★

阮一峰的网络日志 – http://www.ruanyifeng.com/blog/ – Deep yet accessible articles. ★★★★★

Spring Boot中文导航 – URL not provided – Curated Spring Boot blogs and projects. ★★★★

Spring Cloud中文导航 – http://springcloud.fun/ – Spring Cloud resources. ★★★★

Web前端导航 – http://www.alloyteam.com/nav/ – Comprehensive front‑end site list. ★★★★★

Spring For All – http://www.spring4all.com/ – Community around Spring. ★★★★

廖雪峰的官方网站 – https://www.liaoxuefeng.com/ – Excellent beginner tutorials. ★★★

bugstack – https://bugstack.cn/ – JD architect’s deep dives on frameworks, source code, design patterns. ★★★

Java技术驿站 – http://cmsblogs.com/ – Rich Java articles. ★★★

酷壳 – https://coolshell.cn/ – Insightful essays by 陈皓. ★★★

床长人工智能教程 – https://www.captainbed.net/blog-neo/ – Fun AI tutorials for casual readers. ★★★

五分钟学算法 – https://www.cxyxiaowu.com/ – Quality data‑structure and algorithm content. ★★★

犬小哈教程网 – https://www.exception.site/ – Humorous tech Q&A comics. ★★★

原创技术大联盟 – http://techblog.pub/ – Navigation page linking to hundreds of top tech blogs. ★★★