# Ampersand Tutorials

> Free, beginner-friendly tutorials on web development, AI coding assistants, TypeScript, bioinformatics, statistics, R and jamovi, from Ampersand Academy. Every guide is step-by-step with runnable code examples, a comparison table and an FAQ. No sign-up, no paywall.

Ampersand Academy (https://ampersandacademy.com/) offers paid one-to-one training in these subjects; the tutorials on this site are the free library.

There are 225 published tutorials. This file is a short map of the site; [the full index](https://ampersandtutorials.com/llms-full.txt) lists every one.

Guides answer questions in their first paragraph, so a single passage is usually enough to use them.

## Topics

- [Materialize CSS](https://ampersandtutorials.com/topic/materialize-css/): 38 tutorials
- [Bioinformatics](https://ampersandtutorials.com/topic/bioinformatics/): 16 tutorials
- [Bootstrap](https://ampersandtutorials.com/topic/bootstrap/): 16 tutorials
- [Good Environmentally Sustainable Practices](https://ampersandtutorials.com/topic/gesp/): 15 tutorials
- [Python](https://ampersandtutorials.com/topic/python/): 14 tutorials
- [SASS](https://ampersandtutorials.com/topic/sass/): 9 tutorials
- [Statistics](https://ampersandtutorials.com/topic/statistics/): 9 tutorials
- [Advanced Excel](https://ampersandtutorials.com/topic/advanced-excel/): 8 tutorials
- [Food Technology](https://ampersandtutorials.com/topic/food-technology/): 8 tutorials
- [TypeScript](https://ampersandtutorials.com/topic/typescript/): 8 tutorials
- [Web Development](https://ampersandtutorials.com/topic/web-development/): 7 tutorials
- [Nano Technology](https://ampersandtutorials.com/topic/nano-technology/): 7 tutorials
- [jamovi](https://ampersandtutorials.com/topic/jamovi/): 7 tutorials
- [R Commander](https://ampersandtutorials.com/topic/r-commander/): 7 tutorials
- [AI](https://ampersandtutorials.com/topic/ai/): 7 tutorials
- [Biostatistics](https://ampersandtutorials.com/topic/biostatistics/): 7 tutorials
- [R Programming](https://ampersandtutorials.com/topic/r-programming/): 6 tutorials
- [HTML](https://ampersandtutorials.com/topic/html/): 5 tutorials
- [SAS](https://ampersandtutorials.com/topic/sas/): 5 tutorials
- [Python Analytics](https://ampersandtutorials.com/topic/python-analytics/): 5 tutorials
- [Android Development](https://ampersandtutorials.com/topic/android-development/): 5 tutorials
- [Microbiology](https://ampersandtutorials.com/topic/microbiology/): 5 tutorials
- [Angular](https://ampersandtutorials.com/topic/angular/): 5 tutorials
- [React](https://ampersandtutorials.com/topic/react/): 5 tutorials
- [Payload CMS](https://ampersandtutorials.com/topic/payload-cms/): 1 tutorial

## Latest tutorials

- [What Is Payload CMS? Code-First Headless CMS Explained](https://ampersandtutorials.com/payload-cms/what-is-payload-cms/)
- [Python Descriptors, Metaclasses and Generator Coroutines](https://ampersandtutorials.com/python/python-data-model-descriptors-metaclasses/)
- [Python Performance: Profile First, Then Fix Data Structures](https://ampersandtutorials.com/python/python-performance-profiling-memory/)
- [Python GIL, Threads, asyncio and Multiprocessing (Measured)](https://ampersandtutorials.com/python/python-concurrency-gil-asyncio/)
- [Python Bytecode and the Specializing Interpreter (PEP 659)](https://ampersandtutorials.com/python/python-bytecode-specializing-interpreter/)
- [Python Object Model: Names, References and Mutation](https://ampersandtutorials.com/python/python-object-model-references/)
- [IPython: Magic Commands, Tab Completion, and Faster Prototyping](https://ampersandtutorials.com/python/python-ipython-productivity/)
- [Python ConfigParser and Paramiko: Config Files and SSH Automation](https://ampersandtutorials.com/python/python-configparser-paramiko-ssh/)
- [Python CSV and JSON Parsing: Read, Write, and Convert (With Examples)](https://ampersandtutorials.com/python/python-csv-json-parsing/)
- [Python File Management: shutil and os Explained (Copy, Move, Archive)](https://ampersandtutorials.com/python/python-shutil-os-file-management/)
- [Pythonic Code: PEP 8 Style Guide for Readable Python (With Examples)](https://ampersandtutorials.com/python/python-pep8-coding-style/)
- [Python Functions: def, Parameters, Return Values, and Scope](https://ampersandtutorials.com/python/python-functions-and-scope/)
- [Python If-Else and Loops: Control Flow Explained Simply](https://ampersandtutorials.com/python/python-control-flow-loops/)
- [Python Core Data Types Explained (Lists, Tuples, Dictionaries)](https://ampersandtutorials.com/python/python-core-data-types/)
- [How to Set Up Python and Run Your First Script (2026 Beginner Guide)](https://ampersandtutorials.com/python/python-environment-setup-first-script/)
- [AI, MCP, and the Famous Servers That Make Life Easier](https://ampersandtutorials.com/ai/ai-mcp-and-the-famous-servers-that-make-life-easier/)
- [Standard Deviation vs Standard Error: The Difference](https://ampersandtutorials.com/statistics/standard-deviation-vs-standard-error/)
- [Correlation Coefficient: How to Read r Correctly (2026)](https://ampersandtutorials.com/statistics/correlation-coefficient-explained/)
- [How to Remove Duplicates in Excel: 3 Fast Methods](https://ampersandtutorials.com/advanced-excel/remove-duplicates-in-excel/)
- [Excel Data Validation: Dropdown Lists That Work (2026)](https://ampersandtutorials.com/advanced-excel/excel-data-validation-dropdown/)
- [Materialize CSS Date Picker and Time Picker Guide](https://ampersandtutorials.com/materialize-css/materialize-css-datepicker-guide/)
- [Materialize CSS Tabs: Complete Guide with Examples](https://ampersandtutorials.com/materialize-css/materialize-css-tabs-guide/)
- [Bootstrap 5 Tooltips and Popovers: Complete Guide](https://ampersandtutorials.com/bootstrap/bootstrap-5-tooltips-guide/)
- [Bootstrap 5 Tables: Complete Guide with Examples](https://ampersandtutorials.com/bootstrap/bootstrap-5-tables-guide/)
- [Bootstrap 5 Tabs and Pills: Complete Guide (2026)](https://ampersandtutorials.com/bootstrap/bootstrap-5-tabs-guide/)
- [Bootstrap 5 Toasts: Complete Guide with Examples](https://ampersandtutorials.com/bootstrap/bootstrap-5-toast-guide/)
- [Bootstrap 5 Offcanvas: Complete Guide with Examples](https://ampersandtutorials.com/bootstrap/bootstrap-5-offcanvas-guide/)
- [Bootstrap 5 Accordion: Complete Guide with Examples](https://ampersandtutorials.com/bootstrap/bootstrap-5-accordion-guide/)
- [Bootstrap 5 Carousel: Complete Guide with Examples](https://ampersandtutorials.com/bootstrap/bootstrap-5-carousel-guide/)
- [Bootstrap 5 Buttons: Classes, Groups and Sizes (2026)](https://ampersandtutorials.com/bootstrap/bootstrap-5-buttons-guide/)
- [Bootstrap 5 Dropdown Menu: Complete Guide (2026)](https://ampersandtutorials.com/bootstrap/bootstrap-5-dropdown-guide/)
- [Bootstrap 5 Modal: Complete Guide with Examples](https://ampersandtutorials.com/bootstrap/bootstrap-5-modal-guide/)
- [Materialize CSS Carousel and Slider: Complete Guide](https://ampersandtutorials.com/materialize-css/materialize-css-carousel-guide/)
- [Materialize CSS Forms: Inputs, Select and Validation](https://ampersandtutorials.com/materialize-css/materialize-css-forms-guide/)
- [Materialize CSS Dropdown Menu: Complete Guide (2026)](https://ampersandtutorials.com/materialize-css/materialize-css-dropdown-guide/)
- [Materialize CSS Modal: Complete Guide with Examples](https://ampersandtutorials.com/materialize-css/materialize-css-modal-guide/)
- [Materialize CSS Navbar: Responsive Menus Made Simple](https://ampersandtutorials.com/materialize-css/materialize-css-navbar-guide/)
- [Materialize CSS Buttons: Variants, Waves and Icons](https://ampersandtutorials.com/materialize-css/materialize-css-buttons-guide/)
- [Materialize CSS Cards: Layouts, Hover and Elevation](https://ampersandtutorials.com/materialize-css/materialize-css-cards-guide/)
- [Materialize Sidenav: The Complete Guide (2026)](https://ampersandtutorials.com/materialize-css/materialize-sidenav-complete-guide/)

## Other

- [Sitemap](https://ampersandtutorials.com/sitemap_index.xml)
- [Full tutorial index](https://ampersandtutorials.com/llms-full.txt)
- One-to-one training: https://ampersandacademy.com/