How to install a package in freeBSD

1. Usually freeBSD provides a ports for many packages. So just search for a port using the following commands
whereis package name
this may give out like this /usr/ports/.....
now just change the directory to the above directory and give commands
make install clean
for removing make deinstall clean
if you having package tar file in /usr/ports/distfiles/ then fine you are done otherwise freeBSD will try to connect to internet. If you are not connected to internet just download the package (note the version number required) manually and put it in /usr/ports/distfiles

2. If no port is available for the desired package. Then use the following commands

pfg_add package name
for removing pkg_delete package name

good luck