1. you don't, however you can filter out items that you don't want to see by hovering over them and pressing delete (hover + backspace to show again)
2. yes, tokens reset skills. free on d2pk, cheap on annihilus; i think you can still farm dusts too if you want a free one
3. picking up gold isn't possible here, also pickit will get you banned

you get gold by voting on the homepage, donating, or from events (tournaments)