Since a few months ago I've been using Tracktions shortcuts in a way that's been very convenient!
The idea is to reassign your favorite shortcuts to certain keys so you can use them without looking at the keyboard.
In the "basic" position I place my left hands fingers on the the keys Ctrl, z, x, and c. The reason I've choosen these keys is that they are close to the Shift and Alt keys (at least on my swedish keyboard
z -> jump backwards to next cut point
x -> start/stop playing
c -> jump forwards to next cut point
To get a smoother scrolling effect when z or c is pressed I sometimes create a track containing short empty midi clips placed on every second beat or so...
Ctrl + z -> delete
Ctrl + x -> expand or contract the current track height
Ctrl + c -> zoom in
Holding down Ctrl and pressing x and c in sequence is a nice way to zoom in after you've selected a clip and moved the cursor to the right position.
Now all that remains is to asign the keys that are in easy reach from z, x, and c:
b -> rescale all tracks to fit on-screen
spacebar -> zoom out to fit the entire edit on-screen
Pressing the spacebar and b at the same time with your thumb works like fast zoom-out.(Tip: If you hold down spacebar long enough, Tracktion will get back to the previous zoom-level then the spacebar is released)
s -> pick up midi selection tool (maybe already selected by default...don't remember)
d -> pick up midi pencil tool
Ctrl + s -> scroll tracks down
Ctrl + d -> scroll tracks up
f -> enable/disable selected filters
Ctrl + f -> split selected clips at cursor
v -> switch to 'velocities' mode in midi editor
Ctrl + v -> switch to 'notes' mode in midi editor
Ctrl + g -> undo
a -> jump to the mark in point
It takes a day or two to get used to the changed shortcuts, but once you get the hang of it you
work faster. At least I did...
Happy experimenting!
