There are many Linux Certifications out there and we need to know which is right for you. Is it the RHCSA, LFCS, Linux+ or LPIC-1. To know which is the best Linux certification for you we need to know` why you want the certication. Ig gaining a certifcation is just to learn Linux then any will be good for you. If the certication id all about getting a better job we need to know which ones are popular and we can use Keyword explorer tools to show searches made using those keywords.