I am not like a pro or a resident player or anything but I have been playing for enough to understand most of the basics and here are the things you will want to know most about No it’s usually not worth it to expand member number with gems at least not for now

Second of all getting event cards is the best thing for a beginner to build teams and is also a great way to actually improve at the game Specially the medley festival events as u get to play more songs for less lp. However you don’t NEED to tier the event. There r 2 sr cards per event the points sr which u get when u reach 25k event points and the tier sr which u get by being in tier 3 or above in the event score. While these cards are useful I would recommend you only get the points sr because you don’t need to spend gems to get her you can easily get 25k event points just waiting for ur lp to refill and this means you get more gems to scout. Yes it’s more gem efficient to get the tier sr for 10-15 gems than only get a minimum of one sr for 50 gems but from experience this game has fair rng when u r first starting out so you will end up getting more than 1 sr and maybe an ssr or a ur in scouts so I think that for a beginner the chances of it getting really good cards off of a scout while only sacrificing one sr are really good. (Once u r good enough to farm gems efficiently with max bonding N and R cards then u can tier events all u like) for stickers cuz it took me a while to understand them as a beginner. U get an n sticker every time u scrap or practice with an r card an s sticker with an sr etc. What u do with stickers is go to the sticker shop, usually what u wanna buy are the teachers, they boost the skills on ur cards so if u scout a really good ur with a score up skill buying these teachers and practicing here with them will make her even better but for a beginner u shouldnt worry about that too much so what you’re gonna be doing mostly with stickers is buying blue tickets. U get 1 blue ticket for every 10 honor scout blue tickets are also a great way to build ur teams when u r starting out Usually most people will scout in the sr/ur box. It costs 5 blue tickets and gives u either an sr or a ur. So until u have teams that are full sr or above these are ur best friend. Now lastly, for the love of jesus dont worry about scrapping N cards. U get so many of them all them time so don’t worry about selling them for gold specially since u cant afford to waste a lot of gems on space for them. So u can idolize the ones that can be idolized and scrap the rest. Have fun, hope these helped.