cd :- change directory

usage
cd path [ and press enter ]
eg.
cd /boot
cd /var/www/html

to go to base directory use
cd ..

ifconfig :- To check network detail of your network adaptors [ same as ipconfig in windows ]

history :- Will tell your last run command[s]

To clear your history use following command
history –c

And last but not least use manual
There are various manual program installed on your Linux distro [ cannot guarantee that each command will work fine ]
man :- Manual of a command
man command [ replace command with your command press enter ]
eg.
man history

info :- same as man
info command [ replace command with your command press enter ]

whatis :- Brief description of command
eg.
whatis command [ replace command with your command press enter ]