DBA or LLC. For RE wholesaling

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Hello everyone, Let me say that I am absolutely NEW in the real estate industry. With that said I've decided to venture into real estate wholesaling as a start to build some income. My question is should I get a DBA or LLC when first starting out? Also, what are some other things that you would recommend that I do when starting out in real estate wholesaling? It doesn't have to apply to my first question, but I would like ANY advice that you would recommend to a newbie like myself. Thank you so much, Mel