Using surface currents on earth as a reference for fictional world-building

Hi all!

I was wondering if anyone has pointers about creating biomes in a fictional world with its own unique continents and islands that still relatively follows the rules of earth science? I've been using nat geo's mapmaker to get a sense of population density, average temperatures across the planet, biodiversity, mountains and water sheds, tectonic plates, wind and surface ocean currents, and depths/heights of the Earth's surface so that I can learn a bit more about what conditions lead to certain biomes.

Following the same laws of physics that exist for Earth and assuming a nice round planet the same size as Earth, what should I consider when mapping wind and surface ocean currents on my planet? I don't know anything about oceanography beyond what I've learned for world-building but I have started to create pathways for the currents assuming it follows basically the same rules of temperature as Earth does. The cold currents are easier for me to understand how to map out, the warm currents are trickier. I understand that there won't be one right answer because it's a fictional world but, in general, how/why do warm water currents flowing along the equator either travel as far as they do to the poles vs becoming gyres, and how does that relate to which way the currents travel alongside land masses? When should I be darting across an ocean instead of following a coastline?

I mostly want to get this down so I can design realistic biomes for different areas on a given continent and, yes, I get that soil acidity, distance from the ocean, temp, and a number of other factors play a role too. Right now I'm focusing on the rain shadow effect and putting deserts in my world where they belong. If it matters, I created a sort of Pangea and then cut it apart and put in tectonic plates to justify the shape and locations of the continents.

Let me know if this is confusing? Thanks in advance!