There are other sources for material that aren't books and journals. There is social media, email, blogs, websites, personal communications, etc. Sections 10.15 and 10.16 of the 7th ed. APA is where most of the information is found. A specific example will be given when it is different.
The link to this and examples can also be found at: https://apastyle.apa.org/style-grammar-guidelines/references/examples , and then under "Online Media".
Section 10.15 covers Social Media. The template on p. 348 shows what information needs to be included, and what needs a description. Twitter and Instagram requires the author name as well as their username. Please be aware that you do not change any spelling or capitalization in a social media reference, and include a description of emojis if there are any. More information can be found on p. 348.
Twitter: Examples #103 and #104
Facebook: Examples #105 and #106
Instagram: Examples #107 and #108
Online Forum Post: Example #109
Section 10.16 covers websites and webpages, and begins on p. 350. The general template can be found on p. 351, and the examples that follow are specific by type.
News Website (webpage): Example #110
Website with a group author (webpage): Example #111
Website with an individual author (webpage): Example #112
Website with no date (webpage): Example #113
Website with a retrieval date (webpage): Example #114
Personal Communications do NOT get mentioned in your references; they can't be retrieved, so they are only mentioned in text. Personal communications are covered in Section 8.9, which begins on p. 260. Please refer there to learn about the parenthetical and narration citation styles necessary for this type of reference.