Hi Deborah! Any change is upsetting. If you are not comfortable on the bike you will be concerned about that and not fully concentrating on where you are going.
My first bike was a brand new 1964
Honda Sport 50. In '74 I bought a
Yamaha DT175 Enduro which I rode dirt and street until '86 when I got married and sold it. I am not a newbie.
Back in '74 I went to the DMV on a Sunday when it was closed and tried the test course. Failed. Never bothered to get my motorcycle endorsement. This time, after 18 years not riding, I took the MSF course so as to waive the DMV road test. First day riding I learned what I was doing wrong and why I was unable to pass the DMV test 30 years prior.
I thought it interesting that about 2/3rds of the class were old codgers who decided to get back on bikes after 10-20 year layoffs. I feel that I got my $200 worth. The 1/3 of the class that had never ridden before also all passed.
The advantage of the MSF course is that
all the basics will be covered -- there will not be a "oops! forgot to mention" as you lay in a crumpled heap. Also with the class you are with others of similar experience levels and
see for yourself that what they are telling you works.
One of the stressed points is that you go where you are looking. If you want to go left, you look left. If you want to go right, you look right. And if you look at the curb as you turn into the parking lot you will run into the curb.