Subheadings and writing formally. edit

Please can you help me - how do I add a subheading to an existing page, and how do I write the paragraph formally, using references from YouTube and other Serbian-based sites - I have only edited once, and was years ago, I feel passionately about my topic (a song controversy-- BTS & Aca Lukas).

82.2.181.227 (talk) 13:58, 2 January 2019 (UTC)Reply

Headers (and subheaders) follow the "equals" method of headings - if you see in this heading it has == Subheadings and writing formally. ==, or two equals signs for a lvl-2 header. If you wanted to get a subheader here, you'd use === Subheader===, or three =s. More information about headings (and other markup) is at the CHEATSHEET.
Information about inserting references can be found at WP:REFB, though I would also read through WP:RS regarding reliable sources (i.e. YouTube is generally not an RS). If you want more help, change the {{help me-helped}} back into a {{help me}}, stop by the Teahouse, Wikipedia's live help channel, or the help desk to ask someone for assistance. Primefac (talk) 16:26, 2 January 2019 (UTC)Reply