For Download a software or rpm with dependencies Type
where, --downloadonly = just download it.
--downloaddir= directory where you save rpms
sudo yum install --downloadonly --downloaddir=/save/to/dir software name
Like you want to install VLc player then just type
sudo yum install --downlaodonly --downlaoddir=/home/user/Downloads vlc
(user = user-name)
For installing software cd /path/to/dir
sudo rom -ivh *rpm or `sudo rpm -Uvh *rpm`