MySQL Utilities -- some are useful
Database Migration -- may not need this
MySQL Bug Reporter -- ask questions here; almost always there is an 'answer', not a 'bug'
Workbench Blogs -- Workbench is just one tool
Planet MySQL -- probably too technical to get started with
Workbench Forum -- Workbench is just one tool
Scripting Shell -- new in 5.7; don't bother with it (yet)
mysql commandline tool -- Use this.
If you hit something that might be old; check this way: If it talks about InnoDB --> good. If it talks only about MyISAM --> too old. If it does not even mention Engines (InnoDB/MyISAM) --> antique.
My "Rick's RoTs" will keep you out of trouble (mostly):
http://mysql.rjweb.org/doc.php/ricksrots