1. I ended up with this cheap digital scale from amazon. It’s sold under several brand names but it had very good reviews on YouTube and on forums. I calibrate it each time and keep a beam scale close by to double check measurements occasionally. It works for me, but I’m not a competitive shooter.

Homgeek Digital Milligram Pocket Scale Mini Jewelry Gold Powder Weigh Scales with Calibration Weights Tweezers, Weighing Pans, LCD Display https://www.amazon.com/dp/B071GYVQF3/ref=cm_sw_r_cp_api_fab_x2gIFbXDFMHH3

1. Welcome to the struggle. There’s a discord for reloading supplies and you can sign up for notifications for particular components. Ultimately you’re trying to catch an online supplier when they list components and you usually have a couple minute window to place your order. Sourcing locally is always easier if you can find any.

2. I personally deprime before tumbling. You can use your decapping/sizing die or if you’re concerned about getting your sizing die dirty you can get a universal decapping die from Lee, Lyman etc.

LEE PRECISION Decapping Die, Silver (LP90292) https://www.amazon.com/dp/B002SF2ZXU/ref=cm_sw_r_cp_api_fab_CdhIFb7RT7C8G

1. There’s a couple options here but I use a bullet puller that you whack on the ground. After a few hits the bullet will come out of the case. Picked it up on amazon for about $12

Impact Bullet Puller with 3 Different Expandable Collets (Pack of 1 Set) https://www.amazon.com/dp/B07WDNH81Q/ref=cm_sw_r_cp_api_fab_ddhIFbQD83JNH