Well you posted here your comment that mean you are interested to learn more about networking and you are searching Networking course.
then my advice is here you should visit NB and join CCIE Integrated Course. that will be helpful to you to get more knowledge in networking.
or if you want to go as System Administrator then you need to be certified in CCNA,MCSE,RHCSE because now a days organizations 
 want multi talented person.
thank you