Sreetips is awesome! Also check out Cody's labs. He has an entire series on precious metal recovery. Also Nile red has some great videos as well
Buying silver scrap can be a trap for new players. I have been buying pre-loved bling for over 10 years and if it wasn't for the XRF machine, I would have been out of this line of business from the very beginning. It's quite common to discard up to 40% of a parcel because so much bling sold nowadays are compromised. Even if an item is made of silver, the fineness could be overstated i.e. 40 - 80% fineness stamped as 925 Also testing a kilo of scrap can take you an hour if there are 75 - 100 individual pieces in a parcel. Not sure if your local bullion dealer would be too happy for you to tie up their XRF machines for that long a time, so factor another $25 - $30 to hire an XRF for an hour or so.