Two ways: build from source, or
pre-compiled packages. In many Tux
distro's they're called RPMs.
Get on google, or the website of your
Linux distributor, and read about installing. There should be some good step by step tutorials on the web if you can find time to read a while. Generally, the build from source method is something like:
1.ftp the tarball from apache.org
2.unzip/untar the thing in some dir
3.read the docs you just put in "some dir"
4. ./configure ---with options you want
5. make
6. make install
Keep in mind I'm from the BSD camp, so RPM's
are foreign to me. They're probably a bit
easier. In *BSD, using ports, it's usually
cd /usr/ports/www/apache
read docs, pick any config options and
config if desired
make all && make install
G'luck, sorry I'm not more help.
KDK