I need help setting up fpdf and getting the results to display correctly in a web browser. I know absolutely nothing about PHP but I am fairly proficient in linux.

1. I downloaded fpdf.zip but I have no idea what to do with it, Im lost after extracting it

2. If I try to display the results in a web browser I just get a bunch of text crammed together in one big paragraph

loaded php modules:
Core
ctype
date
dom
ereg
fileinfo
filter
gd
gettext
hash
libxml
mbstring
mysqlnd
pcntl
pcre
posix
readline
Reflection
session
SimpleXML
SPL
standard
tokenizer
xml
xmlreader
xmlwriter
zlib

Im using Arch Linux x86_64 with the default kernel.