Hi there and welcome! Most importantly, congratulations!
Since I'm fairly new to vaping also, your comments made me go oh, yeah, I know exactly where she's coming from! I have only graduated from "just screw on the carto" to "wow, I can fill my own cartos" and "double wow, look at all these juices I can get!" So for now I'm just having fun w/that. I've done a lot of carto-sniffing as well, when I couldn't remember which juice was in which carto. I did buy some colored end-caps & tried to associate them with a flavor (green for menthol, pink for strawberry, etc.) Inevitably, I would end up topping off a carto w/the wrong juice, but found that made for some interesting (and tasty!) flavor combinations
Vaping is so much more fun and wonderful and yummy than smoking ever was - what was I thinking all those years?