To be CCNP in the new track, passing Tshoot 642-832 is a must. While it does bring new challenges to the candidates. The first thing is to pass the Routing and Switching exams. This will give the foundation to tackle any trouble ticket (TT) that would come in Tshoot.
Here are general guidelines of how to solve Tshoot.
1- the Tshoot exam topology has the configurations for both ipv4 and ipv6. so when tackling an issue, you should be aware if the question is ipv4 or ipv6 related. and you should be able to know which commands are for ipv4 and which are for ipv6. (it was very confusing for me when i saw the run config)
2-if you know where and what techology is the issue, but can’t figure out which line should be fixed. abort the ticket, check the configuration from another ticket it might help.
3-if you cant figure out the issue, abort the ticket, come back to it at the end. you might end up wasting too much time on it.
How I approached the Tshoot exam.
1-first, do ipconfig at the client, to know that client getting ip address. if not, troubleshoot.
2-ping default gateway, if cant. troubleshoot.
3-traceroute from default gateway to destination in the question (usually the server 126.96.36.199). troubleshoot from the point the traceroute fails.
best of luck, let me know how it went for you.