Downloaded ark knights and gonna start today - read a few guides but there's so much info. Any advice before I start?
arknights as a game is pretty forgiving of just fucking around and finding out. you can read guides and lots of people have typed lots of words about the best way to squeeze out the most digital resources but don't feel like you have to memorize all that or you fuck up your account forever, it's really not that serious. do prioritise building your base though, because it passively generates resources that make things easier long term.
if everyone is saying a unit is good then the unit is good but if everyone is saying a unit is bad don't fucking listen to them, first of all because a lot of units that got called bad turned out to be god tier if you just use them as intended, and second because every unit in this game is perfectly functional and your strategy matters far more than how strong your units are. arknights is a well designed strategy game first and gacha game second.
level your 3* units, they're cheap and completely serviceable, and their functionality is designed to teach you basic gameplay principles that higher rarity units will branch out from. they also have good base skills to help get you started.
if you just want to read visual novel arknights then feel free to follow video guides for every stage, but if you want to also play strategy game arknights then try to understand why the video uses certain units in certain ways. again, an understanding of the game mechanics will take you much further than rolling the latest powerful unit.
the monthly card is a good deal if you're not averse to spending on gacha games in general.
here's the best gameplay information resource
here's the best resource for non-gameplay information like upcoming events and external media like manhua
here's my preferred online story archive
here's the droprates database
the arknights gamepress is dead and I personally avoid the arknights wiki where I can because the lead editor is a petulant despot, I only check it if I need a list of operators that have a certain debuff or something.