Even if it's a felony they don't always, as long as it's not a violent crime, some kind of federal offense shit or drug related (and lately it seems every now and then they still wont if it's just pot) but if it's manufacturing or something like that they will. Also a handy tidbit - if it's a nonviolent/drug related misdemeanor, some, or hell idk possibly all, states as long as there's at least one county or parish between the one you are in, and the one you have the warrant out of, usually they wont extradite.
As far as the slammer goes.. like Native said - keep to yourself as much as possible. You'll read alot to keep yourself entertained/distracted. Don't get involved in drama. Just keep an idk to each their own I don't want to be in the middle of no shit attitude and people tend to respect that. I've been in and am a woman, but I was roommates with one of my best friends after he spent a year in and from the way he talked about it I think guys tend to be more violent and less apt to keep the pod/day room area whatever other folks call it, and cells clean so may be a initiative you have to take up if you don't want to get sick from uncleanliness. If they provide water in a dispensor cooler, don't rely on the guards to clean that shit proper, clean it in the shower when ya know it's about time for them to switch it out. Try to take some white tee shirts, white underwear, and white SOCKS if you know when you're going so you'll have those, and some paperback books, and paper if they allow it. Hell I'd call and find out what all inmates can have and bring as much as you can. DONT bring money though half the time they pocket that shit and you don't get your commissary... give it to someone and have them put it on your books instead. Give all your loved ones the jail address so they can write. Write down everyones address and bring with if you have the option. And learn to courtesy flush for everyones sake.. you WILL have to shit in front of other people. Don't get thrown into a holding cell it sucks most I've been in don't even have a toilet and they're real assholes about taking you to one. Try to be polite to the piggy's - will make your life easier when you need them to be cooperative about something, and trust me.. something WILL come up. And also because not ALL guards are assholes usually.. most but not all. Don't turn the one cool cop into an ass lol. I'd say try to keester stuff to get ya through the first few days and make some friends on day one if ya know you're going but if it's your first time that's a terrible idea.. some are more thorough than others. Oh and just in case... write down all your loved ones numbers so you're able to call them.. ESPECIALLY anyone who may be able to bail you out or at least pick you up on the day you're released. And write down EVERY bail bondsmen in your area, sometimes you can't get a hold of some, and you could get a hold of someone else. If you owe one they may not get you out while someone else is cool enough to understand life happens.. write em all down. Plus the other inmates will love you for having the forethought to do so as they come in. Also bring any meds with you that you take for any reason and have your doctors number written down so they can call them to have your meds refilled - insurance info isn't a bad idea to bring either. Lol I've never been after having a heads up, but that's shit I definitely thought of after. Hope it helps.