I'd be lost too. I don't know how any of the new stuff works like synchro/xyz summoning and I just have cards from older packs in binders and I don't think I have anything I can make a deck out of, but I like the art so I just collected them for aesthetic purposes, haha.
It won't let quote this correctly whether I try to hit the button or use copy/paste but uh hopefully there won't be any more of it in March..