Getting started

I've watched a lot of YouTube video's on scrapping and I have some questions. I'm looking to start a side gig and aside from picking my local area I'm searching for a revenue stream that I could invest in (motors, motherboards etc) and scrap/hold. I've got some space issues so I can't have a yard full of washers and refrigerators etc. I'm happy to take any advice from people who have been there and done that. Thanks in advance for your help.