Cisco Software

Hi I’m currently doing a Dip in Networking at TAFE and in my hardware class we are working with Cisco Catalyst 3550 swicth. We have been asked tog et software (for web interface) to manage the swicth. Been encouraged to Cisco specific and third party one’s
I have looked on this site in whitepapers and more i look, more i’m confused. I new to the IT industry and my 1st step into this industry.
Someone please help.
Regards Ashween