The TST starts at Glacier Point in Yosemite and goes to Cottonwood Lakes south of Mount Whitney. It is about 270 miles long and is at lower elevation and to the left of the JMT. The book that I have was written by Dennis Gagnon and can be found at Amazon for less than $10. It has always been one of those "If I had the time" kind of backpacks after doing the other backpacks.
I have read the book a few times, got out the topo maps and worked out the resupply points but that is as far as that went. If it is like the TYT then you will go days without seeing other backpackers.
The Sierras can be a weird experience. On the JMT highway you can meet, and remeet people but out north of Yosemite it is empty like my trip on the Colorado Trail........5 backpackers in 9 days!
Have a look, Randy