Computer science is the study of the theory, experimentation, and engineering that form the basis for the design and use of computers. A computer scientist specializes in the theory of computation and the design of computational systems.

                    Applied computer science
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   Science -- Computer science 
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                    Theoretical computer science 

• Theoretical computer science
  • Algorithms and data structures
• Applied computer science
  • Database
    • History, design, and management of Databases.
    • MySQL is an open-source relational database management system (RDBMS).
  • Software engineering
    • A Web Servers is an information technology that processes requests via HTTP...
    • Apache Hive is a data warehouse infrastructure for providing data summarization, query, and analysis.
    • Apache Hadoop open-source software for reliable, scalable, distributed computing.
    • Travis CI is a FOSS, hosted, distributed continuous integration service.
    • Docker is an open-source project that automates the deployment.
    • .vimrc contains runtime configuration settings to initialize Vim when it starts.
    • .bash_profile user specific environment and startup programs.
    • API is a set of routines, protocols, and tools for building software and applications.
    • Organizing files, folders and documents on computer.
    • Git is a source code management system for software development.
      • README.md best practices.
    • Intellij IDEA is a Java integrated development environment (IDE) for developing computer software.
    • Google Chrome is a freeware web browser developed by Google
    • SEO is the process of affecting the visibility of a website or a web page in a search engine's.
    • Vim is a clone of Bill Joy's vi editor for Unix.
    • URL is a reference to a web resource that specifies its location on a computer network.
    • Environment is a computer system in which a software component is deployed and executed.
    • Shell scripting is one of the easiest types of scripting to learn: scp, screen, process.
    • Java is a concurrent, class-based, and object-oriented programming language + pyspark
    • Python is a widely used general-purpose, high-level programming language.
    • Shell files, environmnet vars, etc.
    • R is a programming language and software environment for statistical computing and graphics.
    • Understanding Computer Files and how to storage, organizing and process.
    • Google Chrome is a freeware web browser developed by Google.
    • OAuth 2.0 authorization framework.
    • A Web Services is a service communicating with each other via the World Wide Web.
      • Spring RESTful Web Service
      • Spring Boot RESTful Web Service

• Analytics Engineer
• Software Artitect

• Educations
  • Udacity is a for-profit educational organization offering open online courses (MOOCs).
  • Codecademy is an online interactive platform that offers free coding classes.
  • Udemy is a global marketplace for learning and teaching online free/payed.
  • W3Schools is a world's largest web development site.
  • MIT OPENCOURSEWARE OCW is a free and open publication of material from MIT courses.
• Applications
  • Apache Software Foundation is a community of open-source software.
  • Google Developers is Google's site for software development tools.
  • Mozilla Developer Network is Mozilla docs for developers and about the web.
  • JsonPath is to JSON what XPATH is to XML, extract parts of a given document.
  • Markdown is a text-to-HTML conversion tool for web writers.
  • RegexOne Learn Regular Expressions with simple, interactive exercises.
  • Regex101 Build, and test Regular Expressions.
  • Regexp Syntax Summary.
  • POSIX - Basic Regular Expressions.