I want to use logic analyzer to learn remote control IR codes
I did this as a class project in college. The remote LED frequency is very low, and codes are only a few bytes, so almost any analyzer will work.


  If such an analyzer it enough to achieve this mission, can one guide me please what a circuit I have to build to be able to catch the signals from the IR RC led?


You don't need to build anything. Just open the remote and put the analyzer leads on the LED pins directly. Start the analyzer and then push each button. Once you have a few button traces you can look up which protocol your remote uses or just keep going until you have the entire list of command codes.