Hey Liam! Here is an image of what a standard pattern looks like:
Upon takeoff, you fly upwind (away from the airport), crosswind, downwind (parallel to the runway you are using), base, and final (approaching your runway). If you are on left downwind, the runway is to your left and vise versa for right downwind.
If you are told to enter downwind, base, or straight in, this means that you fly that specific leg of the pattern when you are inbound. For example, if told to enter right downwind, you would enter the traffic flow by flying the right downwind leg, then turn to base and final.
I’d highly recommend watching this Infinite Flight tutorial too: