[Tex/LaTex] Change the font of a document in XelaTeX

Question

So I downloaded a template for a CV. It uses XeLaTeX. I would like to change the font but I lost hope to find myself how I am supposed to do that. My OS is Windows 7. Here is a functional code that uses the original font Fontin. I downloaded it to make it work, and I would like to use something else (and something that uses accents (I speak french) !)

\documentclass[a4paper,10pt]{article} % Default font size and paper size
\usepackage{graphicx}
\usepackage{caption}
\usepackage{subcaption}
\usepackage{textpos}
\usepackage{fontspec} % For loading fonts
\defaultfontfeatures{Mapping=tex-text}
\setmainfont[SmallCapsFont = Fontin SmallCaps]{Fontin}

\usepackage{xunicode,xltxtra,url,parskip} % Formatting packages

\usepackage[usenames,dvipsnames]{xcolor} % Required for specifying custom colors

\usepackage[big]{layaureo} 

\usepackage{hyperref} % Required for adding links   and customizing them
\definecolor{linkcolour}{rgb}{0,0.2,0.6} % Link color
\hypersetup{colorlinks,breaklinks,urlcolor=linkcolour,linkcolor=linkcolour} % Set link colors throughout the document

\usepackage{titlesec} % Used to customize the \section command
\titleformat{\section}{\Large\raggedright}{}{0em}{} % Text formatting of sections
\titlespacing{\section}{0pt}{2pt}{2pt} % Spacing around sections
\usepackage{vmargin}
\usepackage{fullpage}

\begin{document}
\setmarginsrb{25mm}{0mm}{30mm}{0mm}{1cm}{5mm}{1mm}{10mm}
\pagestyle{empty} % Removes page numbering

\font\fb=''[cmr10]'' % Change the font of the \LaTeX command under the skills section

\par{\Huge TacTac \textsc{TicToc} - OncheOnche \bigskip\par} 
\par{\Huge \hspace{8mm}  huehuehue \bigskip\par}

\section{Données personnelles}
\begin{textblock}{.9}(0,0)
\rule{97mm}{0.09mm}
\end{textblock}
\begin{tabular}{rl}
\textsc{Date de naissance:} & 01 brumeneige 3030 \\
\textsc{Adresse:} & Somewhere, sometimes \\
\textsc{Téléphone:} & +123456789\\
\textsc{Email:} & what about
\end{tabular}


\section{Objectifs}\titlerule

I met a traveler from an antic land who said : Two vast and trunkless legs of stone stand in the desert... \\

%----------------------------------------------------------------------------------------
%   EDUCATION
%-------------------------------------------------------------------------------                      ---------



\end{document}

I believe the problem comes from the lines

\defaultfontfeatures{Mapping=tex-text}
\setmainfont[SmallCapsFont = Fontin SmallCaps]{Fontin}

But I don't know what I must change, where does the compiler look for the fonts…
I saw other questions that look like mine, but all used Linux. I also saw that there could be some problems with fonts using spaces in their name (seriously…?)… Anyway. Someone got an idea ?

Answer 1

Stripping down your document to the bare minimum required for this question (see minimal working example (MWE) for more detail), the following shows how to change the main font of your document with \setmainfont:

\documentclass{article}
\usepackage{lipsum} % add nonsense text
\usepackage{fontspec}
    \setmainfont{Arial}

\begin{document}
\lipsum[1]
\end{document}