As a total n00b on Push 3 I discover things and have questions…
Here is the place to ask how to do something, help each other or explain a trick you found!
Maybe let’s have a convention to put one sharp # before the title of a trick to make it big, and two sharps ## before the title of a question? Like:
# [Trick] Section/context: what the trick is about
## *[Question] Section/context: whatcha, whatcha, whatcha want?*
I’ll start with this simple one:
On a drum rack MIDI clip, you can select a line = all the notes associated to one drum pad by holding [Select] and pressing the pad. Hold the drum pad and you nudge all the notes at once.
How do I move the notes from a MIDI clip so that the notes that exit the MIDI clip are cycling at the opposite extremity of the MIDI clip?
E.g. on a 4-bar pattern, I want to shift all the steps back of 1 bar, and have the initial first bar to be replicated in the new 4th bar. How do I do this?
I find Simpler’s slicing very efficient, but I often need to edit or delete some of the slices…
How do you add a slice between two existing one?
If I’ve understood correctly you could do that by moving the “Start Offset” position in the clip editor forward one bar.
The 4th encoder moves it, you can press shift to move it in smaller increments.
Oh yes it works! At least if I need to do this on the whole sequence.
What if I need to shift only a line in a drum rack?
I don’t know if that’s possible on an individual drum pad. You can hold Select, then hold the pad you want, and it will select all the notes for that pad. You could use the Nudge control to move all of them at once then but you don’t get the “wrapping” behaviour you want.
Could be some way of doing it I’m missing though
I remember the new Octatrack users complaining about the OT ways don’t getting the basic DAW functionalities such as poly mode, etc.
I right in the opposite situation, yet so close in a way 
I finally realized today that you can use the big jog wheel while viewing and audio clip to change the start marker position.
Prior to this I’d been converting to a simpler just to trim the front of a clip.
…when u want to find the elektron way in everything… 
It seems like something that should be doable in Live 12 MIDI Transformations but who knows when they will make it onto Push 3 Standalone.
This is not what you asked for 
but there is a “Note Echo” device in Midi Effects. You could add that to the Drum Pad itself so it only affects the one hit. In Mute mode it doesn’t let the original note play so you could delay the note by a bar to sort of achieve the same thing.
Moving the “Start Offset” is the quickest and easiest method for what you describe.
If you want to keep your loops tidy you can also use the ‘double loop’ button and move the loop brace over by one bar, then crop the clip.
Yes, seems like a good way to achieve what I want, thank you.