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First steps in programming

Programming starts with breaking a problem into steps you can check one at a time. The language comes next, and it is learned quickly. Here is the progression that leads from an idea to a first tool you genuinely use.

What settles first

A program is a sequence of instructions where each line does one checkable thing. Learning therefore starts with writing very small programs that run and that you read aloud: a variable holding a value, a condition choosing a path, a loop repeating. Then comes the skill that accelerates everything else: reading an error message, finding the line number and the nature of the problem, fixing it, running again.

  • Break a problem into steps you can check one by one
  • Variables, conditions and loops: the three basic structures
  • Functions: naming a routine so it can be reused
  • Lists and dictionaries: storing data so it can be found again
  • Reading error messages: the skill that saves the most time

The progression, week by week

  1. 01

    Write and run

    A five-line program printing a correct result. The goal is execution, not elegance.

  2. 02

    Choose and repeat

    Conditions and loops on concrete cases: sorting a price list, counting occurrences.

  3. 03

    Read and write files

    The program leaves the terminal and handles your own data: a statement, an export, a list.

  4. 04

    Ship a useful tool

    A script automating a task you used to redo by hand. That is the end-of-course deliverable.

The short format, block by block

This format condenses the full progression. Each block carries its hours and credits: the total recomputes on the catalogue scale, ten taught hours per credit.

Teaching blockYearHoursCredits
Logic and algorithms115 h2
First Python programs115 h2
Files and automation115 h1
Final project115 h1

Beginner questions

What level of mathematics is needed?

Everyday arithmetic and logical reasoning are enough to begin. Discrete mathematics appears in longer programmes, where it serves algorithms and complexity estimation, and it is taught there from scratch.

Which language should I learn first?

Python, for a practical reason: its syntax leaves your attention on the reasoning rather than on punctuation. The concepts then transfer to any other language, and longer programmes add JavaScript and TypeScript for the web.

How long before I write something useful?

The catalogue's short format produces a working personal tool in 3 months, at 8 hours of work per week. It is the final block's deliverable, and it answers a need you bring.

First steps in programming — Resources | IHETC — IHETC