Well a warm welcome to you.
Don't worry we all have to start somewhere with this journey of travelling single. I have a husband but he has no interest in tours, so in 2006 I started useing JY my first tour was to the USA.
Like you I cannot read a map so going with a group is good, you are very well looked after with JY, I have done 11 tours and I have not got lost as yet.
When I started I was 46, at 35 you will be in the younger age bracket but I think there are more younger ones travelling now than when I started. The tour groups can vary in size I like the larger groups as there is more people to buddy up with and makes for a busy group which I like.
Have a look in the brochure read up exactly what's included etc, then book it and start the countdown till you go..
Have fun!
Cindy