Beginner question

[sweebutt]

also is there a clear tutorial of how to insert/edit chords and edit the score? and how every button on the editor work/affects the score and its clear function?
I've read the manual but to be honest it's not clear nuff (the layout is also slightly different from the OSX version)...I checked the related video but without words honestly it wasn't clear nuff again...
my main questions are whether the score has a grid, how it considers the spacing (if it does) and consequently how do you place multiple chords (still not able to do that, keeps telling me wrong positioning and I don't have a clue why), also how to set the length of the chord, how to delete multiple bars at once, how to preview a group of bars in the score and so forth..
not having a grid or a clue on how the score is actually divided or how the editor "thinks" is a bit disorienting since it doesn't seem to work in an intuitive way .. once time signature is set, for example, is that grey cursor indicating a single beat?

thanks for the support