Welcome Ijustwanttoplay!
Is there any particular part of the game that's causing you confusion? Navigating? Plotting intercepts? Actually conducting an attack?
TheNorseCast's play through is pretty great and he tries to put enough detail into why and how he's doing things.
For my part here's a video of how to intercept a hydrophone contact step by step. It's using an earlier version of the UI from TWOS, but most things should work the same.
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