Find websites that offer writing guidelines and samples of these letters, such as Compassion.com and Bigbiz.com. Search through the sample letters listed on these sites, and pick the right one to provide inspiration for a letter to send to a son.
Compassion.com offers various categories of letters written for different people and purposes. The site allows the visitor to browse through these categories and select one to view or download a copy. The website has various sample letters in each category that are sponsored by members of the page. The site also offers letter-writing instructions and training. Additional tips on letter writing are available on the page with the options of copying and pasting a letter to send to a son or to make adjustments before sending the letter.
Bigbiz.com provides sample letters that parents can use to write letters to their sons. The site offers tips that parents can use when writing letters, such as locating a quiet place and writing by hand. In addition, the site provides parents with sample sentences that can be used to start off their letters or finish them. The site also lists different sample letters with various themes for use in particular situations.