Add English to the Spellcheck languages in Editor section in the settings and remove English (united kingdom).
Set default location for new notes to same folder as current file in Files and links section.
Set default location for new attachments to in subfolder under current folder in Files and links section. Write attachments as the subfolder name.
Set the themes to obsidianite in appearance section.
Set default location of new canvas to same folder as current file in Canvas Section.
Set New link format to Relative path to file and disable Wikilinks in the files and links section to be able to use Mkdocs or other markdown to static site builder.