Roland Canada Product Specialist Jacob Watters shared this series of video tutorials that explore the basics of subtractive synthesis. The tutorials are created on the Roland System-1, but they are general enough to apply to most subtractive synths.
The first video, above, looks at making string synth sound.
The following videos demonstrate how to synthesize a variety of drum sounds, including snare, kick drums, synth toms and hi-hats:
The next synthesis tutorial video looks at how to create an acid bass sound on a subtractive synthesizer:
Next up, creating a funky synth bass sound:
The last video in the series explores the basics of frequency modulation (FM) synthesis and shows how to make bell sounds: