So I've seen (lesbian) tv shows/movies getting some love here lately, but books seem to remain mostly forgotten. Because I am a bookworm, I can't let that happen. My favorite genre is romance, meaning my suggestions (in no specific order) will fall in that spectrum:

1. Strawberry Summer by Melissa Brayden
2. Those Who Wait by Haley Cass
3. Temptation by Kris Bryant
4. Destination You by J.J. Arias
5. The Flaw in our Design by Monica McCallan
6. The Last to Leave by Erica Lee
7. In the Mirror by Lise Gold

I didn't repeat any authors, but these seven women wrote more books I like. For now, these are my suggestions (but I have a digital library full of lesbian romance if anyone wants to read more).

PS.: You can easily find these books online for free. Of course, if you end up liking them, I recommend you to purchase them. I'm not sure I can post any link to help you with that, but... there are subreddits that can help you.

Edit: And if you visit The Lesbian Review > Find Your Next Read, you can filter through categories, age of protagonists, story and plot, etc.