Class B learners permit

Getting my class b license for a new job. Gonna go ahead and get the learners permit while I study for tests. Anyone know for sure what to study in book for the test? I called the office and they said last section of book. Anyone know for sure? (Texas)

 

for class b, air brakes hazmat, unless you pull a trailer than you will need combination. to. if its a class b tanker than tank too .

 

But what about for just a learners permit what do I need to study?

 

all of them, whatever you think your gonna drive. if its just class B just take the class B test and air brakes. you can always take the rest later.