I dont have any digital notes, But I can suggest some useful books

Contemporary Town planning by John Levy ( This will cover 60 % of the Syllabus)
JWT guidebook on TPUM ( This will cover 40 % of the syllabus especially Pakistan specific issues)

I used these 2 books. The first needs to be read cover to cover. The second is a guide book written by copy pasting from international authors. So you need to aware that this will not provide adequate material but it has some useful content specific to the FPSC syllabus of TPUM.

The book by John Levy revolves around American Town/City planning but it give a better understanding and material on standard concepts such as Urbanization, sprawl, housing crisis etc.

You can find the book by john levy on the internet. If not, I can send you a copy.
The JWT one is only available in hardcopy form so you need to purchase it. (Sorry)

Hope this helps.

__________________
He who knows all answers has not been asked all the questions - Confucius