Get a box or small tote bin for your supplies.
It's best to have all these things in one place and ready before you begin, this way you can power through and be completely done. But you don't have to do it all at once. Work at your own pace within your own schedule. Some consignors enter items on one day, print tags on another day, and attach the tags on yet another day. Some do it all in one day. Some enter 10 items (because 10 tags print on 1 page), print that single page, and attach those 10 tags, box those items up, and set aside as one box done. Do whatever works for you!
The first 3 items on this list are mandatory, the rest are optional things that will help in various ways to get different types of items tagged, secured, and prepped for successful selling.
Now you're ready to enter your items into the online inventory system. But first, you need a consignor number, which creates your account where you will store your inventory.