New how-to on posting picture? Options

[CelicaSlowboi]

I was trying to create my first thread in the build forum and could not add pictures to my post for the life of me. I went to the sticky'd post about adding pictures but the linked video would not play. Then I tried creating my thread without pictures and then just add them later but after I hit "post" it would just go to the build forum main page, not including my post. While I'm new to this forum, I've been using similar forums for years but cannot seem to figure out the posting process here. If anyone could help me with adding pictures or just posting in general it would be greatly appreciated!