The new Ribbon UI has been the source of some discussion. Is it good or bad. I'm sure there are a lot of opinions on the subject. The old interface has been around since at least R4 (when I started), and I'm all but certain goes back even sooner.
The opinions are varied, but speaking for myself, I like the new toolbar. I like the extra room it gives me for my model browser, and as I'm getting used to it, I find that I'm moving through the commands faster.
But, no matter what side of the discussion you're on, there's no denying that there's a learning curve.
Fortunatley, there's a 'Command Locator' that will help us find the new commands on the new Ribbon UI. Here's a video on how you can use it.
I'd recommend giving the UI a fair chance. I think once that initial learning curve is over, you'll come to like it.
If you do prefer the original UI, then not to fear, it's still available. Check out my older blog HERE on how to set it back!
Out of work? Check out the Autodesk Assistance Program HERE for help with training and software to hone your skills.