Oh believe me, I totally get the feeling - muscle memory can backfire like that. Especially if neither old nor new interface is perfectly intuitive, and also just similar enough to be confusing where they differ.

I can't stress enough how good Robert Hutton's tutorial videos are though! They often contain little nuggets of behavior that I missed when first learning a new tool. For example, until I watched his videos I didn't know double-clicking on any curve resets it. Knowing those kind of little things adds up over time.

https://www.youtube.com/playlist?list=PLmvlUro_Up1NBX7VK8UUu...