Tips on starting furniture making?

IF you have enough for a "full size" shop, including workbenches, a table saw, etc. Then I recommend Steve Ramsey (Woodworking for Mere Mortals). He has a lot of projects and shop tips for people just getting started. He also has a website that has a constantly updated buy list for how to build a shop on the cheap.
https://www.youtube.com/@SteveRamsey

IF you are tight on space, but still want power tools, then Peter Millard (10 minute workshop) is a UK woodworker that does a lot of cabinetry and custom builds in a small basement UK shop. It's really nice, and he even has a series of projects where he starts with just some super basic tools, and then makes slightly more complicated stuff every week.
https://www.youtube.com/@10MinuteWorkshop

IF you want to try your hand at a no power tool shop (which can still be expensive to buy the stuff), then Paul Sellers is a great instructor. Most of his videos assume you don't know anything and are just starting out.
https://www.youtube.com/@Paul.Sellers

Finally, Stumpy Nubs is a great channel for just general info, shop tips, and safe handling of tools. Just beware that he slips in a lot of "Just buy this one last thing from my affiliate link and it'll solve all your problems."
https://www.youtube.com/@StumpyNubs

Wood Whisperer, Tamar at 3x3 Custom, Lincoln St. Four Eyes, Izzy Swan, and a bunch of other channels are a lot of fun too, but most of them have moved into more of a "watch me make this awesome thing with my quarter million $$$ shop."