Switch commands:

>enable
#config t
(config)#hostname SW1
SW1(config)#service password-encryption
SW1(config)#enable secret cisco
SW1(config)#banner motd # welcome to SW1 #
SW1(config)#ip default-gateway 192.168.1.254
SW1(config)#line con 0
SW1(config-line)#password cisco
SW1(config-line)#login
SW1(config-line)#line vty 0 15
SW1(config-line)#password cisco
SW1(config-line)#login
SW1(config-line)#exit
SW1(config)#int vlan 1
SW1(config-vlan)#ip address 192.168.1.253 255.255.255.0
SW1(config-vlan)#no shut
SW1(config-vlan)#exit
SW1(config)#spanning-tree vlan 1 priority 0 (*YOU COULD PUT vlan 1,2,3...Also the priority increments by 4096 starting at 0.)
SW1(config)#int range f0/2-20
SW1(config-if-range)#spanning-tree portfast
SW1(config-if-range)#spanning-tree bpduguard enable
SW1(config-if-range)#switchport mode access
SW1(config-if-range)#switchport port-security 
SW1(config-if-range)#swithcport port-security mac-address sticky
SW1(config-if-range)#switchport port-security maximum 1
SW1(config-if-range)#switchport port-security violation shutdown
SW1(config-if-range)#exit
SW1(config)#int f0/24
SW1(config-if)#description connection to Router1
SW1(config-if)#switchport mode trunk
SW1(config-if)#int f0/23
SW1(config-if)#description connection to client SW2
SW1(config-if)#switchport mode trunk
SW1(config-if)#int f0/22
SW1(config-if)#description connection to client SW3
SW1(config-if)#switchport mode trunk
SW1(config-if)#exit
SW1(config)#vlan 10
SW1(config-vlan)#name HR
SW1(config-vlan)#vlan 20
SW1(config-vlan)#name ACCT
SW1(config-vlan)#exit
SW1(config)#int range f0/2-10
SW1(config-if-range)#switchport access vlan 10
SW1(config-if-range)#int range f0/11-20
SW1(config-if-range)#switchport access vlan 20
SW1(config-if-range)#exit
SW1(config)#vtp domain TND
SW1(config)#vtp mode server (*By default all switches are servers. Using the same command you could change it to CLIENT OR TRANSPARENT)