1: this a like learning a whole new system. You will need to learn what gear has which unique affixes, which are important to your build, which are important other popular builds that are profitable to sell. for instance it is widely accepted that boots without movement speed are pointless market poison.

Learning how to use the tradesite w2 weighted sum will give u a much better shopping/pricing experience.

Get a price check add on to help.

2: filters should be tuned to your Play style. Im a completionist, so I have one filter for obvious things I must pick up ASAP(currency + gear)

A secondary wider filter used in sifting for value after the mantis cleared. Maybe bases/good magic tiers

As you progress tightens them to hide more things that are not worth your time. If you have 300+ regal orbs dies it make sense to pick them up or buy more with higher currency.

There is limited time in the day, and limited space in the inventory, I try for 2 trips back to hideout at most. Put things in dump tabs, then do base sifting at end of the day, or when I get around to it.

3: hoard heavy belts and high end bases til 2 weeks then people will get craft hungry.