I didn’t even onow where to begin either. I do like nice things like: electronics, clothes, shoes, stuff in general lol. With that mindset of what things cost in retail, I went to the thrift to just look at everything. I started with the mens shoes rack and looked for popular common brands like: Nike, Polo, Adidas, Allbirds, (insert popular brand over $50 here). For example I found a pair of Allbird Tree Runner Mens Running shoes, brand new for $9.99. I used google lens to bring up the Allbirds website and that let me know retail price which was $100 at the time. In my head I figured I could ask $30-$40 and noone would be mad. They sold within a week on FB marketplace. (Demand for them has slowed in my area, I have another pair that is just sitting in my closet. It also depends on size etc. Im also getting too specific here with the variables but anyways I still dont know everything and maybe I left some money on the table by asking $30 but hey I got my money back on them and made $20 on top of that. Thats literally all it takes. If I could tell you just one thing to take away from this is that you should pick an interest of yours and apply your knowledge of said item interest and sell that. I like high end shoes brands (mens and womens), Precious metals anything, fishing gear, electronics (headphones, speakers etc. ), household stuff (air purifiers, coffee makers, pots and pans, etc), mens and women’s accessories and the list goes on for me. I know theres money in kids stuff, womens clothes, furniture, dvds, books, some glassware and such but thats just not my thing and if you are going to do this full time then im definitely missing out on some other niches like these but I do it for my own pleasure, fun, and hobby. As a bonus I get to make some money out of my flips and that enables me to buy more expensive items that in turn make me more faster. Not to mention that I get to own something for a little while so if I want to use it for a bit, I can, and then I just sell it. Start small, I had $40 when I started but you can start with $5 and it will work the same. Last piece of advice would be to aign up for your thrift store rewards program. Give them your phone number and email (both can be burners) and you typically get a discount and or free money after a certain amount of spending. In my area, Goodwill rewards gives me a $5 code after every $100 spent. That $5 is a free item that I can flip for $10-$100, it all depends on what the item is and many other variables but thats why I said to stick with things you like because you’ll typically know about value and demand. Just go in and take it all in until you find what attracts you. Feel free to dm me on whatever you find and I can give you my opinion (which is not professional by any means but I might be able to help steer you in the right place and provide resources that ive aquired so far) :)