LaTeX is a macro package implemented on Don Knuth's TeX programming language and is used primarily for creating high quality written documents. Note that http://tex.stackexchange.com is specifically dedicated to LaTeX questions (and TeX, and other related technologies).
LaTeX is a macro package implemented on Don Knuth's TeX programming language and is used primarily for creating high quality written documents. The underlying TeX system is Turing complete and LaTeX inherits this property, making it possible (but rarely advisable) to perform arbitrary computations in LaTeX; more interestingly it makes it possible to get any layout scheme you can describe precisely.
There is a Stack Exchange site dedicated to LaTeX (and TeX, and other related technologies), which is a good place to ask any LaTeX-related questions.
Other resources
A great many problems can be solved by selecting the right existing macro package from CTAN.
