Setting up a subdomain as well as installing Omeka was relatively straightforward, similar to installing WordPress. The only time I was hesitant was deciding whether to go with Omeka S or Omeka Classic, I decided to go with Omeka classic as it is a much better option when considering the scale of my website. However, I could see myself using Omeka S on a larger scale project in the future similar to https://images.library.amnh.org/digital/items/show/18760.

My Omeka archives: http://archives.mbaughan.com/