Before we start learning it’s good to know your guitar. Below is the diagram that explains the different parts of the guitar.
Guitar Parts

Standard Tuning
Each String of a Guitar is tuned to a particular note when played open. Thinnest string of Guitar is the 1st String and Thickest is the 6th String. Below is the diagram that shows the standard tuning( Open Notes of All strings) .

As seen above you can remember tuning as E-B-G-D-A-E or ( Every Beautiful Garden Deserves An Eye. This is bottom to top approach.
To remember Tuning From Top to Bottom . Tuning will be E-A-D-G-B-E or (Eddie Ate Dynamite Good Bye Eddie).
This tuning is important to remember since it will be used to tune our Guitar in upcoming lessons.