So as per what people said on the question I asked in the Teahouse, to do when page is translated:
add to the talk page *and* an edit summary {{translated page|es|SourcePageTitle|version=99999|insertversion=9999}}
retain non-English characters in Title; version=identifier of the revision of the source page from which the translation was derived. (To find this, select the
history of the source page, and click on the date that corresponds to that revision. The
resulting page will have a
URL that ends with a number, e.g. ...oldid=123456789. That number is the version identifier.). insertversion is same thing but with target page
red links in English but blue in Spanish
if spanish/english titles would be the same: {{ill|English title|es|Title in foreign}}
OR if it has a different title in one language {{ill|English title|es|Title in foreign}}
if making a whole new article or see there isn't one added, make an InterWiki link using the Languages/Edit links tool in the left-hand column.
At the bottom of the Wikidata language list, notated 'Languages', there is a link labelled 'Edit links'. Clicking on this will reveal a new page:
scroll down to the box marked 'Wikipedia' and click on 'edit' at the top of that box
click on the greyed-out 'wiki' field, the final item on the list, and enter a language code (see
List of ISO 639-1 codes for all language codes)
click on the greyed-out 'page' field (now visible) and type in the name of the article as it appears in that language's Wikipedia
So as per what people said on the question I asked in the Teahouse, to do when page is translated:
add to the talk page *and* an edit summary {{translated page|es|SourcePageTitle|version=99999|insertversion=9999}}
retain non-English characters in Title; version=identifier of the revision of the source page from which the translation was derived. (To find this, select the
history of the source page, and click on the date that corresponds to that revision. The
resulting page will have a
URL that ends with a number, e.g. ...oldid=123456789. That number is the version identifier.). insertversion is same thing but with target page
red links in English but blue in Spanish
if spanish/english titles would be the same: {{ill|English title|es|Title in foreign}}
OR if it has a different title in one language {{ill|English title|es|Title in foreign}}
if making a whole new article or see there isn't one added, make an InterWiki link using the Languages/Edit links tool in the left-hand column.
At the bottom of the Wikidata language list, notated 'Languages', there is a link labelled 'Edit links'. Clicking on this will reveal a new page:
scroll down to the box marked 'Wikipedia' and click on 'edit' at the top of that box
click on the greyed-out 'wiki' field, the final item on the list, and enter a language code (see
List of ISO 639-1 codes for all language codes)
click on the greyed-out 'page' field (now visible) and type in the name of the article as it appears in that language's Wikipedia