Best way to get ready for an ot in my opinion is also getting a other, smaller elektron und learning it. It makes getting into the ot so much easier. I understand why some people would sell it again. I think the majority of them didn’t have a different elektron first. I probably also would recommend the mc here, even if I have never touched it.
Second step would be to create boatloads of samplechains for when it arrives. I just love sample chains and don’t know how I have lived, uh, made music without them.