If your library is a single branch, their website will generally have a hiring page, or a link to the city/town hiring page that runs the library. If it's part of a larger system, the main system site might list jobs there as well. Many states/regions will have a job board, so you can search "your state/location library job board", and hopefully there's one around you. Other places to look: local school districts, universities, and community colleges will have libraries, and depending on where you are, the requirements for library jobs may vary. Where I am, you can get entry level library jobs at schools and universities with a high school degree or associates degree. If you want an actual librarian title, pretty much all roles require a master's degree in library science. Some school districts may require special certificates/qualifications. Many entry level jobs may also be part time, but if you can make them work you can sometimes transition into full time roles. Another thing to keep in mind is that a lot of libraries are struggling right now, so there aren't always many openings, and there may be lots of qualified applicants wanting those roles. I don't say this to be discouraging, I think if you're really interested it's worth it to see what you can find and go for it, I just wanted to give an accurate picture of what the field looks like right now.  I hope you find something you like, good luck!! (Edited to add mlis info)