If you are looking to understand various readings of Genesis 1-3 within the PCA, you could do far worse than to read the Report of the Creation Study Committee. It does a superb job of breaking down some of the more complex views within the bounds of our denomination, including the Analogical Day and Framework views.
More importantly, it models the humble attitude we should take towards those with whom we disagree on such matters:
Nevertheless, our goal has been to enhance the unity, integrity, faithfulness and proclamation of the Church. Therefore we are presenting a unanimous report with the understanding that the members hold to different exegetical viewpoints. As to the rest we are at one. It is our hope and prayer that the Church at large can join us in a principled, Biblical recognition of both the unity and diversity we have regarding this doctrine, and that all are seeking properly to understand biblical revelation. It is our earnest desire not to see our beloved church divide over this issue.