plz send material on portal development

hello sir/madam,

I am sandhya.I completed my B.Tech.I am new to Portal Development.Can u suggest me how to get knowledge on portal and what are the prerequisites for portal.What are the sites which gives information about portal development and where we can get the training.If u have any materials can u plz send me.

Thanking u,

Regards,

Sandhya Rani.Immadi