BS”D
Wallflower: There are many places to start (and I strongly suggest asking your Shul Rov (not “sem rabbi” or any woman figure)), but if I were doing it myself, this is where I would start:
Shulchan Aruch Even HaEzer Siman 21 (with the meforshim on the side), and Siman 115 Sif Katan 4 (also with Meforshim).
Shulchan Aruch Orech Chaim Siman 75 (same, and the Mishna Berurah, make sure you see sif katan 2 & 7 in the MB).
Shulchan Aruch Yoreh Daya Simin 340 Sif 11 (pashut because of Vered, but I did want to throw it in because I saw an article that IMHO completely misunderstood the source).
It would also help to see the source Gemaros in Brachos 24A and Kesubos 72 A&B.
Then there are “modern” Teshuvos, but as with many modern Poskim, not all are accepted as source and there are many disagreements.
I’m sure there are others, but that is a (IMHO) good start.
For Halacha L’Maase, as always, ask your LOR.