How To Make A Strong Password

I got this from one of forum I join..

To create a strong password that is easy for you to remember but hard for someone else to determine, try one of these techniques:

Merge two or more words, and combine the words with numbers and symbols. For example: Walk[My]Dog, Po#34tato, Champions=1995.

Abbreviate a phrase you'll remember. It could include numbers and symbols, or words that you can substitute with numbers or symbols.

For example: I ride my bike 5 miles each Saturday could become the password Irmb5meS.

Use punctuation and numbers to combine the initials of people or objects from a familiar group, such as your favorite athletes, friends, movies, books, or historical figures.

For example: Gandhi, Abraham Lincoln, and Joan of Arc could become the password 1G,2AL,JA.

Drop all vowels from a favorite saying, and then add numbers or symbols. For example: Walk three dogs could become the password Wlk3Dgs.
To be strong, a password must:

Contain at least seven, but no more than 16, characters.
Combine three of the four different types of characters:
Uppercase letters (for example: A, B, C).
Lowercase letters (for example: a, b, c).
Numerals (for example: 1, 2, 3).
Symbols (` ~ ! @ # $ % ^ & * ( ) _ + - = { } | [ ] \ : " ; ' < > ? , . /).