Hi John,
I’m not sure exactly the point at which you are talking about but let me see if I can help.
If you want to Reset the Loc, Rot and Scale, you can press Alt G, Alt R and Alt S respectively, if you have autokeying turned on, it will key those new zeroed out values.
If you saw me move a keyframe and it snapped back to zero, it is likely that there was already a keyframe before and after in the timeline. This will mean if the stretched keyframe is moved, Blender will calculate the new value, and if there is a keyframe before and after that is telling it to hold the value of zero (or whatever) it will snap to that value.
One thing you might find yourself doing quite often is duplicating a key (that has the desired value already) and then placing that where you need it.
There are a myriad of different ways to wrangle your keyframes and it all comes down to personal preference and however you feel like doing it at the time. If you keep at it, you will find the fastest way for YOU in any situation.
But honestly, don’t focus too much on speed when you start out. Focus on the result. The speed will come – I promise!
.
