Your Master Password is used to secure and encrypt all your passwords and data. Your Master Password should be long, random, unique and easy to remember.
Here are two ways you can create a strong Master Password.
1) Passphrase method
Think of 4 random words which you can easily remember and link them together with special characters. Make sure you use both uppercase and lowercase letters.
Example: Mountain-Lawn-Yellow-Zebra
2) Sentence method
Think of a long sentence which you can easily remember. Use the first character of each word to create your password. Use uppercase and lowercase letters and combine the letters with numbers and special characters.
Example: The car is green – it has two doors and four wheels = tCig-ih#2D&fourW