Tags in Zotero

There are too many stoopid tags in my Zotero library.  I think there's some way to import from Endnote that doesn't include them, but...I'm not into that right now.

So, this forum exists, and it's good.  This is a list of things I didn't understand for a while:

• You have to go Preferences (the little gear) - Advanced - "Show Data Directory" to find out where the SQL thing is.
• I don't know one thing about SQL.  Not even one thing.
• The commands listed have to be executed separately, and they're wrong in the post:

delete from itemTags where itemTags.tagID in (select tags.TagID from tags where 

tagType = 0)

delete from tags where tagType = 0

• "tagType" doesn't exist, so change it to just Type.
• I picked a few tags that I liked and changed their "Type" to 1, so that I could save them.