Examples — Recent
Examples of powerful LaTeX packages and techniques in use — a great way to learn LaTeX by example. Search or browse below.

UBC Math 220 Example
An sample essay for Math 220 assignments
Nona Steele

Using LuaTeX to convert interword glue to spaces and kerns
PDF accessibility requirements stipulate that word breaks must be represented explicitly in the PDF. However, TeX engines do not use space characters to separate words: they use interword glue. This project shows how you can use LuaTeX to replace interword glue with space characters and kerns without affecting the visual appearance of typeset text.
To understand the difference this makes for users of accessibility software, listen to this sound recording made using Adobe Reader DC's Read Out Loud feature. It records the two lines of text in this project being read out loud, before and after converting glue to spaces.
This is a plain TeX file compiled using LuaTeX. It is for experimental use only and not intended to be a full, production-quality solution. Primarily, it is designed to assist with understanding technical issues related to accessible PDFs. The Lua code in this project is based on the earlier Overleaf article Boxes and Glue: A Brief, but Visual, Introduction Using LuaTeX.
Note
This project uses its own simple and very minimal OpenType font loader derived from this code: http://wiki.luatex.org/index.php/Use_a_TrueType_font.
Graham Douglas

Aula sobre Gráficos no Latex
Aula sobre Gráficos no LaTeX ministrada pelo professor Egmon Pereira a alunos do primeiro período de Eng. da Computação do Cefet-MG Unidade de Timóteo.
Egmon Pereira

Mapa Conceptual SE
A horizontal stepped concept map.
Juan Samuel Soto González

A sample document demonstrating the gridleno style
A sample document demonstrating the gridleno style

Inference Rules and T-diagrams with the semantic Package
Some examples of typesetting inference rules and T-diagrams using the semantic package.
LianTze Lim

楊氏係數 第一部分 光槓桿
這裡事實驗摘要,簡介實驗的目的與實驗結果,以不超過兩百個字為原則。
陳俊愷

Tikz UML2 Activity Diagram and Mathematical Block Diagram
Tikz Example for UML2 Activity Diagram and Mathematical Block Diagram
Martin Hünermund

Example Venn Diagram with isolated areas filled
This example helps to show how the isolated areas of a Venn diagram can be filled / coloured.
It was created as part of this answer on TeX StackExchange.
Other options for creating Venn diagrams with multiple areas shaded can be found in the Overleaf gallery via the Venn Diagrams tag.
John Hammersley