Intro to Spring / Spring Boot
Creating a Web Services (Web App) using Spring Boot
Creating REST/RESTful APIs (like /search API of Google)
Intro to MySQL and JDBC
Multithreading
Make yourself comfortable with basics of core Java (Useful links given below)
Install and explore "Postman" (by hitting some APIs), study about JSON also (Useful links given below)
Install Maven (Useful links given below)
Install MySQL (including workbench) and try some commands(Creating table etc.) (Useful links given below)
Study about REST APIs (GET, POST, PUT etc.) (Useful links given below)
For REST APIs https://www.youtube.com/watch?v=xkKcdK1u95s&list=PLqq-6Pq4lTTZh5U8RbdXq0WaYvZBz2rbn (only first 7 videos of this playlist)
For core Java: https://www.geeksforgeeks.org/java/ https://www.w3schools.com/JAVA/default.asp
https://www.youtube.com/watch?v=W-N2ltgU-X4
For Postman: https://www.postman.com/downloads/ https://www.youtube.com/watch?v=7E60ZttwIpY
For MySQL: https://www.youtube.com/watch?v=WuBcTJnIuzo https://linuxconfig.org/install-and-configure-mysql-workbench-on-ubuntu-linux
https://www.youtube.com/watch?v=7S_tz1z_5bA (only first one hour will be sufficient) https://www.mysqltutorial.org/
For Maven: https://www.youtube.com/watch?v=pt3uB0sd5kY https://maven.apache.org/install.html
For JSON: https://www.youtube.com/watch?v=iiADhChRriM
https://www.youtube.com/watch?v=pTAda7qU4LY&list=PL59LTecnGM1Mg6I4i_KbS0w5bPcDjl7oz&index=9
https://www.youtube.com/watch?v=70qy6_gw1Hc&list=PL59LTecnGM1Mg6I4i_KbS0w5bPcDjl7oz&index=13
https://www.youtube.com/watch?v=6q98thyEX4Q&list=PLonJJ3BVjZW6_q8gh7XoLUIhRIyBcYJLP
https://www.youtube.com/watch?v=7GwptabrYyk
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https://api.github.com/search/users?q=shashi
https://developer.github.com/v3/
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https://www.youtube.com/watch?v=sm-8qfMWEV8&list=PLqq-6Pq4lTTYTEooakHchTGglSvkZAjnE
https://spring.io/guides/gs/securing-web/
https://www.baeldung.com/security-spring
https://springframework.guru/spring-boot-restful-api-documentation-with-swagger-2/
https://www.baeldung.com/swagger-2-documentation-for-spring-rest-api