Are you asking about the courses in Pega?

If yes you can go through PCSA first and after some hands-on experience, you can go for PCSSA.

Hi 

Seems like you are new to learning pega . 

firstly you can start learning CSA course and give an exam .

then go through the CSSA course and appear for the exam . 

Then you can also prepare for CLSA . 

If this is not what you mean , can you give us more detail which course you want to learn . 

Regards