It took a while but with some help, I timestamped this useful video for beginners on using Touchdesigner. It is by Ben Voigt product manager at Derivative.
03:50 - structure 04:50 - navigation 08:30 - resizing nodes (don't) 11:00 - data flow and animated wires 11:25 - data not travelling (paused) 12:15 - displace 12:30 - paramaters and values (on the right) 13:20 - increments 16:10 - Videos (moviefilein TOP) 17:23 - warning message (non-commerical) 18:02 - help for top 18:20 - codecs 21:50 - adding new nodes with the OP Create Dialog (double click or TAB) 22:10 - TOP - Texture operators 22:50 - Webcam (videodevicein TOP) 24:00 - Edge TOP 24:12 - connecting nodes 25:20 - auto connecting nodes 25:25 - composite TOP 27:00 - GPU Mem 28:35 - Feedback TOP 33:10 - Transform TOP 37:00 - Bypass Flag 38:15 - Level TOP 39:50 - reset paramaters 40:20 - view only changed parameters 41:30 - saving and incrementing projects 44:00 - home (H key) 44:29 - Operator families 44:48 - CHOP - Channel Operators (channel data) 45:23 - SOP - Surface Operators (3D surface) 46:00 - MAT - Materials for 3D Surfaces 46:20 - DAT - Data Operators - (Text, tables, scripts) 50:30 - Flags 52:30 - Frame rate FPS 54:50 - Rename Nodes 57:16 - CHOP to SOP 58:56 - CHOP to SOP another demo 1:00:58 - checkboard (alpha) or black 1:02:20 - Resolution TOP from CHOP to 1:03:27 - Switch CHOP1 with input control 1:05:51 - Value of Null CHOP vs direct 1:06:45 - Export CHOP 1:08:22 - Invert CHOP with Math CHOP (range) 1:10:01 - Fade with Lag CHOP 1:11:24 - Ramp TOP 1:13:37 - Table DAT dock node (helper node) 1:15:43 - Noise TOP 1:18:37 - Add multiple OPS connected shortcut (from menu) 1:19:33 - Constant CHOP 1:19:50 - Speed CHOP 1:24:52 - Lookup TOP 1:26:01 - One OP to multiple connections shortcut (from network) 1:27:41 - Comments in OP or Text DAT 1:29:39 - Display flag 1:30:44 - Slider Component 1:32:00 - MIDI Input configuration MIDI in CHOP 1:33:33 - Select CHOP 1:35:20 - Leap Motion input 1:37:01 - OSC input CHOP (ZIG SIM) (internet issues, skip) 1:41:05 - OSC input CHOP start 1:45:45 - DMX in CHOP 1:46:50 - Replace connection 1:47:20 - Audio and Sample Rates 1:48:20 - Audio Device Out CHOP 1:49:10 - Audio Device Buffer Length 1:50:48 - Audio filters 1:51:50 - Audio Analyzer network demo 1:55:53 - Combine Left/Right channels and then Combine CHOPS 1:56:43 - Audio Spectrum CHOP 1:57:10 - Audio Dynamics CHOP (compressor and limiter) 1:58:08 - Audio Movie CHOP (buffer match) 2:01:08 - Beat detection discussion 2:02:05 - Tempo, Beats discussion 2:03:30 - SOPS preview (Torus SOP and SOP display options) 2:06:12 - Sphere SOP (polygons and cook time) 2:08:02 - Transform, Merge SOP 2:11:18 - Grid SOP, Noise SOP, Attribute Create SOP (normals) 2:14:15 - Home on Node, Sphere noise demo 2:14:45 - Python expression in Noise SOP 2:16:03 - Blend between two objects question 2:16:33 - 3d model file formats question (FBX preferred) 2:16:50 - Animation import question 2:17:30 - Importing Python question, instancing question 2:19:50 - Facet SOP, low poly look 2:21:18 - Rendering 3D, Components (Base) 2:22:15 - Geometry Comp tutorial 2:24:00 - Rendering question (Worldspace and Material explanation) 2:25:38 - Render and Display output of Component 2:26:39 - Render TOP (choose geos) 2:28:10 - Camera, Light Comp 2:29:36 - 3D environment pane split, geometry viewer 2:31:50 - Manual camera translation 3D pane (T key) 2:33:00 - Export Render image or movie 2:34:12 - Materials, Phong MAT, Movie File In TOP 2:37:47 - PBR (physical-based rendering) MAT 2:39:10 - PBR Environment Map Comp 2:40:30 - Finding environment maps online question 2:42:50 - Phong vs PBR env map question 2:43:32 - PBR Substance TOP 2:47:15 - Substance Designer application discussion 2:49:43 - Using free Substance .sbsar file demo 2:54:30 - Sub surface scattering, bump mapping, displacement question (GLSL MAT) 2:56:14 - Materials from other 3D packages question 2:56:55 - Substance Select TOP 2:58:00 - Self illumination question 2:58:38 - Substance vs GLSL shader performance question (output GLSL) 3:00:50 - Containers to use in different projects question 3:04:10 - Global user folder question (create project folder DO IT) 3:05:20 - Expose parameters from Comp 3:05:55 - Customize Component 3:08:34 - Connect new parameters to component Parameter CHOP, Null CHOP 3:11:50 - Change file parameter question 3:12:40 - Drag and drop into parameter question 3:13:25 - Collapse selected question 3:14:00 - Difference between base and container question 3:15:48 - Clip based media bin question 3:17:15 - Project screen question Optimization 3:17:40 - Optimization - performance Monitor 3:18:27 - Optimization - Probe (Awesome! - Ed) 3:19:40 - Probe - Orange, Red are heavy 3:20:10 - Probe - Non-moving are not cooking. No worries 3:20:50 - Probe - Remove after optimizing. Projector Output 3:21:05 - Projector output 3:21:50 - Projector Setup 3:22:10 - Window Component 3:24:18 - Open as seperate Window (floating) - heavy 3:24:45 - Open in perform mode (one window) - good 3:25:19 - Perform Mode - F1 open and ESC close 3:25:31 - Perform Mode - Match Screen Size 3:25:56 - Perform Mode - Fill Location (auto) 3:25:23 - Perform Mode - free licence limitation 3:27:15 - Perform Mode - turn off border 3:29:50 - Perform Mode - To other monitor/projector 3:30:25 - Perform Mode - Canvas for Multiple Monitor 3:32:40 - Create Canvas to hold multiple containers 3:33:05 - Embed Containers - Wire (Parenting) 3:34:09 - Background TOP - display top as background 3:34:42 - "./" means go inside "../" means look at parent 3:35:15 - Alignment of children 3:36:06 - Align order 3:36:43 - Change Perform window 3:37:56 - Autosave is CTRL+S Projection Mapping 3:38:26 - Projection Mapping 3:38:55 - Stoner (basic keystone) 3:39:37 - KantanMapper (2d Advanced) 3:40:25 - Kantanmapper - drag in null (easier to change null later) 3:41:06 - CamSchnapper (3d) 3:43:00 - ProjectorBlend - Grid based overlapping Help 3:44:00 - Where to get help 3:45:30 - Operator Snippets 3:47:00 - Stop Cooking