I think you can access CANoe help files. You can find most of process about what you want to do.
Like log a CAN trace, CAN testing, CAN simulation and so on.
If you want to find a CAPL function to implement special function. You can just inset corresponding CAPL function in CAPL browser. It has tips and category for each fuction.
And when you add some dll supplied by CANoe, you can have more functions to call.
Usually CANoeILNL.dll is often used, you can use it for transmit messages in database automaticaly. Also you can use some fault injection function of this dll to test.
Anyway if you need specific know-how, we can discuss.