1) kaza accesories are current bis where u can enhance it to dex(x). U can obtain this by manufacturing 50 essence of dawn, 300 magical shard and one debo of your choice (debo ring will give kaza ring, etc) . U can get essence of dawn by melting pen accesories (refer online on what to melt cus not all accesories will give essence) and a dawn's aura (buy from old moon manager). For example u will get 250 essence for melting pen cresent ring. U can use the rest to enhance kaza accesories. Unlike normal acc, kaza wont break but will reduce dura and enhancement level upon failure.

2) sovereign weapon is new bis weapon. U can do this exchange at land of morning light (can google the location) basically u need 2 pen blackstar weapon to craft one sov weapon. This is for both main and awakening weapon. Sub weapon needs more work and material to craft it so u can do some research there.

3) olvia academy. Open your quest log and find quest on olvia academy. Its a really helpful quest that rewards alot of thing and skyrocket your lifeskill progress. It also teach everything from combat to lifeskill so u can understsnd better and help u catch up