East West Commercial Real Estate

I know you must take course and Ive tried searching online but my results are vague bc I dont exactly know what Im looking for. Does anyone have any info about the length of classes, approximate cost, level of difficulty, tips or anything? Any helpful sites? I live in maryland and by the way is commercial is different from a regular real estate license? Thank you!
can I just study on my own then take the exam for commercial real estate? Is it a requirement I take classes?