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

Multiple Bibliographies with the bibtopic Package
This example shows how to generate multiple bibliography sections with the bibtopic package. Each bibliography section can have its own .bib file. This can be very useful in books or theses, if you'd like one references section per chapter, and also in grant and research proposals. See the package documentation for more information.
writeLaTeX

PSTricks LaTeX Example 7: Drawing a circle
PSTricks provides a number of built in functions to enable the quick creation of figures, graphs and diagrams in LaTeX. Here we see how to use the built in command for drawing a circle.
Original source: http://www.thelazymathematician.com/p/pstricks-examples.html
Megan

PSTricks LaTeX Example 5: Graphing a trig function
Following on from example 4 which showed how to plot the graph of a function in LaTeX using pstricks, here we extend the example to show how trig functions such as cos, sin and tan can be plotted.
Original source: http://www.thelazymathematician.com/p/pstricks-examples.html
Megan

PSTricks LaTeX Example 3: Graphing a curve through specific points
A quick example to demonstrate how pstricks can be used to show a curve between points, and to show the grid axes view.
Original source: http://www.thelazymathematician.com/p/pstricks-examples.html
Megan

PSTricks LaTeX Example 4: Graphing a function
A short example to show how to use pstricks to plot the graph of a function in LaTeX.
Original source: http://www.thelazymathematician.com/p/pstricks-examples.html
Megan

Álgebra
Ejercicios de álgebra tomados del Baldor (edición 1980).
Algebra exercises from Baldor (1980 edition)
Alberto Ordonez

PSTricks LaTeX Example 2: Graphing an interval
This example shows how to use the pstricks package to indicate an interval region.
Original source: http://www.thelazymathematician.com/p/pstricks-examples.html
Megan

PSTricks LaTeX Example 1: Plotting points
A short example showing how to use the pstricks package for plotting points on a graph with axes.
Original source: http://www.thelazymathematician.com/p/pstricks-examples.html
Megan

Tikz airplane picture
Vectorized into eps by potrace, converted into metapost by pstoedit, manually edited into a tikz picture, cleaned up a bit.
Source: https://github.com/lahvak/TeX-stuff/blob/master/plane.tex
lahvak