I have a home directory namely /pto/ppa/ridbmw/etl/

Now i have various directorys below the home directory. For eg
from the home directory if i say cd /roddata it changes to that directory. I think its kind of link (I don't know if it's hard or soft). Now i need to create a new directory and make it have the same functionality.

For eg i now have to create a directory /poddata from the home directory and when i say cd /poddata from the home it shuld take me there. can some body help with the command.

I tried using ln -s /poddata from the home directory but when i say cd /poddata it says : not found

Please help.