Hi
I would recomed you to configure a switch as a VTP server,and rest of the switches as vtp clients.Connect the switches with eachother and configure that ports as trunk ports.
Create the vlans on u r vtp server,this will propogate the vlan info on all the switches.
Segment u r users according to department or buildings or floors.assign each vlan for each segment for this u will need to have a seprate subnet for each vlan.
Does u r router capable of doing intervlan routing.first confrim this.
Thanks
Mahmood
I would recomend u to create vlans per each floor or building.