Hey & welcome to GT!

Originally Posted by: roadcruiser

talking to a musician the other day, and he was adamant that a vital part of learning guitar, or indeed any instrument, is the need to learn and be able to read sheet music. I see the GT does have tutorials available, so as I am just into the first part of fundamentals one, when is the suggested time to start on this area please.

Reading music notation is absolutely an invaluable part of learning guitar (or any musical instrument). It's covered in Chapter 7 of GF2.

https://www.guitartricks.com/course.php?input=fundamentals2

Hope that helps!