Dan Worrall explains the concept of mid/side stereo processing, discusses its uses using examples with the built-in mid/side processing in FabFilter plug-ins.
In this little tutorial Alex Pfeffer sets up a very simple environment to have the legato and portamento intervals available from e.g. VSL Dimension Strings!
Dan Worrall explains various uses of side-chain filtering in compressors, using FabFilter Pro-C and its Expert section. The tutorial discusses compressing subgroups/busses and the master bus but also gives some tips and tricks about single channel compression of vocals, guitars, bass and drums.