Basics and Intoduction https://www.hiredintech.com/classrooms/system-design/lesson/52
https://github.com/checkcheckzz/system-design-interview
http://blog.gainlo.co/index.php/category/system-design-interview-questions/
https://gist.github.com/vasanthk/485d1c25737e8e72759f
https://leetcode.com/discuss/interview-question/system-design/457451/Resources-for-System-Design
https://github.com/donnemartin/system-design-primer
https://github.com/topics/low-level-design
https://github.com/prasadgujar/low-level-design-primer/blob/master/solutions.md https://github.com/kumaransg/LLD https://www.java67.com/2018/05/top-20-system-design-interview-questions-answers-programming.html
These include YouTube videos/playlists/channels. I've not mentioned articles since you can only learn so much from an article, to get skills for cracking interviews.
- https://www.youtube.com/playlist?list=PLSGQtXNzpxREnnLecm6Kyz2-ZSdhaW3ob [Biswajit Sinha]
- https://www.youtube.com/playlist?list=PL564gOx0bCLouDCUMtmj6hMEu1JS7QYEr [Udit Agarwal]
- https://www.youtube.com/playlist?list=PLK8IOvtbwVssQ59IEL73S2ucQdTLiSZC6 [Think Software]
- https://www.youtube.com/playlist?list=PL6Gb7nO-kso4eaeWbgTT7Jp7Yj3zm1s87 [Mayur Vaid]