add class 01.01.02

README.md

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 **Files of my self-taught studies on MIT Open Courseware - Computer Science and Engineering**
 
+> I'm doing the "Computer Science and Engineering" course with the MIT open courseware. In this linear approach (one course at time), I will do all exercises in the "official" programming language taught in the course, and also with JavaScript (Node.JS to be more especific).
+
 ## Basic Roadmap
 
 This roadmap was made upon [this](http://www.eecs.mit.edu/academics-admissions/undergraduate-programs/course-6-3-computer-science-and-engineering) flow chart of [this](http://www.eecs.mit.edu/academics-admissions/undergraduate-programs/course-6-3-computer-science-and-engineering) course.

archives/01-introduction-to-computer-science-and-programming/archives/UNIT-01/02-core-elements-of-a-program/README.md

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+# Core Elements of a Program
+
+This lecture covers the building blocks of straight line and branching programs: objects, types, operators, variables, execution, and conditional statements.
+
+## Session Activities
+
+➭ [Lecture 2: Core Elements of a Program](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-00sc-introduction-to-computer-science-and-programming-spring-2011/unit-1/lecture-2-core-elements-of-a-program/#?w=535) (00:49:49)
+
+➭ **About this Video**: Topics covered: IDLE, types of objects, operators, overloading, commands, variables, assignment, input, straight line and branching programs, looping constructs, Turing completeness, conditionals, nesting.
+
+➭ **Resources**
+
+[Code in Node.JS]() | [Code in Python]()

archives/01-introduction-to-computer-science-and-programming/archives/UNIT-01/02-core-elements-of-a-program/example.js

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+x = 3; // Create variable and assign value 3 to it
+x = x * x; // Bind x to value 9
+console.log( x );  // print the x's value