Use google or youtube there are hundreds of resources online, AFAIK there is no standard way of writing pseudocode.
Example of adding two numbers in pseudocode:
Code:
SET firstNum <- 0
SET secondNum <- 0
SET sum <- 0
INPUT firstNum <- 10
INPUT secondNum <- 5
SET sum <- firstNum + secondNum
OUTPUT 'The sum of the first number and second number is 15'