C++ Basics discusses variables, identifiers, keywords, variable declarations, assignment, output, input, and escape sequences in C++. Key points include: - Variables hold data in memory locations labeled with their name. Common types are int for whole numbers and double for fractional numbers. - Identifiers name variables and must start with a letter or underscore. Keywords are reserved for language use. - Variables must be declared before use, specifying their type and name. They can be declared at the beginning or close to use. - Assignment sets a variable's value using the = operator. Output streams like cout send data to the screen. Input streams like cin get data from the user.