Commercial is a different ball game. You will want to seek solid representation. Most commercial agents are not REALTORs they have a different accreditations. As for seeing value in a property. You will want Profit and Loss statements. You may find yourself in negotiations with the selling/leasing agent, just know that you can absolutely find your own representation. Keep in mind the highest and best use for a property. Want to buy a warehouse? Is storage the best use? Or could it be a showroom, gymnastics studio, offices etc. When leasing the property marketing is huge you want to make sure you are on both the big websites and the local market - use an agent that will give you the time effort and energy that you deserve.
Commercial properties vary by type. Only hire an agent who is specializing in that particular area. Like a restaurant to a gas station etc, you want agents experienced in these types of commercial properties.