Purple and gold weapons you should take on a case-by-case basis they are usually pretty good, so their worth to you depends on what weapons you like to use and what you currently have equipped. As for weapons, blue ones aren’t anything special, so you can dispose of them by selling (if you need money) or dismantling (if you need materials).
Keep the crafting materials, because you’ll need a lot of them. What remains will be a combination of weapons and crafting materials. You should do that all the time and without reservation.
At any merchant, you have the option to sell all “unnecessary” goods. Thankfully, your approach to item management should be pretty straightforward. Sorting through your gear can be intimidating, especially since Assassin’s Creed Origins borrows heavily from RPG inventory design. We spent a lot of time exploring Ubisoft’s open-world take on ancient Egypt (read our review), and pulled out 10 helpful pointers that should get you going on your journey with the right foot forward. That doesn’t mean fans are likely to feel lost, but it does mean that you have some new systems and approaches to figure out. Despite the Assassin’s Creed name, Origins does a lot of things differently from previous games in this franchise.