A number of easy beginner cryptograms are available from Cryptoquote Cryptogram Puzzles. The website provides simple cryptograms regarding weather, death, money and more. The National Security Agency's website, NSA.gov, provides simple cryptograms aimed toward children and novice cryptographers.
Cryptoquote Cryptogram Puzzles offers free, printable cryptograms of varying difficulty. Some of the site's easiest cryptogram puzzles provide the user with five or six known starting letters and relate to topics such as curiosity and careers. NSA.gov maintains a number of cryptogram training exercises on the kid's section of the website. The puzzles are divided into three difficulties, with the beginner puzzles being comprised of simple Caesar ciphers, one of the most basic types of ciphers used in cryptography.