Password algorithms

Here is a simple algorithm to create a password from phrases you like.

1. Choose one or several sentences (quotes, sentences in a book...)
2. Extract the first letter of each word
3. Alternate case
4. Add the number of characters of the first and last word.

Example:
"Password is a pain to remember"
=> "piaptr"
=> "pIaPtR"
=> "pIaPtR88"

To make your password secure you need to make it different for each website/account. You can for example add the first and last character of the website name.

See the reference side-by-side comparison Password memorization techniques