You may find the following things useful: Here is Fux's Gradus ad Parnassum and below is a useful video. You don't need to "know" it in full detail, but it will help you with the basics of 2-part Baroque counterpoint.
You need to bookmark this post as it will contain the link to the Google slides with a summary of your feedback from each harmony lesson. I will add to it each week so you can see what kind of recurring errors you all need to avoid. Click here for the link.