Thought I'd help out here and make a Question Megathread, tried to prefill some answers but is a work in progress so ask more questions or give more tips and I'll add them! Thanks!

update: trying to bold new stuff that's been added or emphasis important stuff for anyone returning to the thread

Gacha / Reroll

• Fast Reroll Guide for Android, make sure to turn off animations in options to speed up games (Youtube Guide)
• See stickied comment below for SSR table and recommendations for starting character.
• Couple easy Dreamballs from achievements like changing jerseys and club logo
• Sources of Dreamballs: login rewards, first time clears, achievements, watching ads (before training and matches)
• Rates (highest to lowest): SSR: 3%, SR: 32%, R: 65%
• Every 10 pulls (50 balls): You get a Point Transfer Ticket, 5x = Guaranteed SR pull
• Minimum goal: 3 different SSR after first 10 pull with guaranteed SSR (incl free Tsubasa and free starting pull)
• Once daily 1 PAID dreamball transfer available, probably worth doing after you reroll a good account (can get 5 dreamballs for $1 one time at start)
• Friend Points can be spent for 100 per pull, can receive N (and R?) level players and higher level coaches and training books
• You get 5x the FPs by using actual Friends so good to send and accept Friend Invites

Players

• Only gain EXP from Training, not from Games
• Training costs more when higher level, try and max out player with as few training sessions as possible to save coins, use Coaches before training books or after evolutions
• Bonus stats (Coaches) and leveling up skills persists through evolution
• Max Levels: SSR 80 (~5.7M XP), SR 60 (~2.8M XP), R 40 (~1M XP), N 20 (~168k XP)
• You get 50% more EXP when a training book matches your player type (coach type doesn't matter)
• You can get 20% more EXP when training 3 times a day by watching an Ad
• Players exist with same name but different combinations of Rarity and/or Player Type, only one player with a given name can be fielded at a time.
• Players with the same skills can be consumed to upgrade the skill on one of the players (Example Diaz Drive Shot lvl 1: 255/415, lvl 2: 256/415... so not really worth it using high rarity players)
• Skill XP carries over so if you fuse all your N's together you won't waste anything when you go to actually use it, saves space as well
• Duplicate named players can be consumed to give another player with the same name one of their skills
• Treasure chest icon means you got the player as a reward not from gacha, they are generally weaker than others at that rarity level, useful for transferring/levelling skills
• Once you're at the inventory limit sell your N ranked books and then players, you're not likely to use either once you get started.

Team

• New formations and customization options are unlocked as you play through story
• You can play players out of their designated position but they lose half their stats (except GKs can only play as keepers)

Club

• Can get Club Transfer tickets which have a chance for SSR by donating and leveling up club then playing the club lotto
• There's an SSR Tsubasa you can get from Club Transfers as well, he's better than the free Tsubasa.

Gameplay

• Focus on Story until Rank 10 , story gives best Rank XP. Check out events afterwards and grind them for drops as needed but when in doubt clear story for dreamballs and Rank XP
• Full auto is generally pretty bad, will score more by playing manually but good for cruising through normal story missions
• Ranking up resets your stamina and league tickets
• You can refill stamina with ads 3x a day if you don't have enough to start a match
• League tickets and Login bonus reset at Midnight GMT
• Friend bonus, daily events reset at 3pm GMT
• Shared Play gives you bonus items costs the same as regular games to host and free to join, get in a club and do it as much as possible! (Youtube Demo)

Events

• Dailies are: Mon-Thurs: Evolution Items Fri: Money Sat/Sun: Coaches
• Raids happen throughout the day for 1hr periods. Can be found in schedule on events page
• Raids drop SR and SSR players, these are mainly meant to transfer and level their skills
• Raid players are generally worse than gacha ones of the same rarity but better than gachas of a lower rarity, so can be a good source of starting players

Community

• Please read the subreddit rules in the sidebar before posting :)
• Here's a link to a Discord for this game