The season has a whole series of milestones/objectives, broken up into chapters. When you go to launch the game, while at character select, look on the right side of the screen. You can also get to the journey list in game from a teensy little leaf icon near your character portrait.
Re: Ramaladni’s, I actually got a second one from that goblin horde, so I used one on my sword of the tribes. I have an amethyst in there at the moment, because I’ve been trying to beef up my defense.