cls - clears the screen
ipconfig - this utility gives you detail information about IP of all network adapters in your pc.Most useful command are
ipconfig /all - it displays all information about Windows IP configuration for all network adapters. ipconfig /release - It teminates all active IP connections on all network adapters and ipconfig /renew - recreate all IP connections for all network adapters. You can display these commands for specific network adapters too.
Advance user and management settings:
gpedit.msc - allow lots of useful stuff ,but most important stuff are in Wi
netplwiz or Control Userpasswords2 - open user account,where you can set "Users must enter a username and password to use this computer (prevent/allow autologin ) ,manager password and secure logon or run "Advanced user management"