This is all general advice for survivors new to the game. This is not meant for advanced play.

1. If you've been put on a hook for the first time, DO NOT use the "Escape" button, it only has less than 5% chance to succeed, and it drains your life each time you attempt it.

2. If the killer is camping you and it's your first time on the hook, repeatedly start the "Escape" channel/animation but let go of the button before the bar fills up to half. Do it over and over because other survivors can see you hanging, and your movements. It'll signal to them that the killer is close by and/or camping.
*NOTE*
I got this info from a different guide for this game, published back in June 2016.

3. If you know a killer is camping another survivor, go repair generators. There really is no point in trying to rescue someone hooked if the killer is still in the general area. DO NOT UNHOOK A SURVIVOR IF THE KILLER IS RIGHT THERE OR CLOSE BY. All it does is give the Killer more points, as they can one shot the person you're saving, and put them right back on the same hook.

4. If you ABSOLUTELY have to rescue someone, and you know the killer isn't camping, wait for more than 2 seconds after the killer has left. The killer knows when someone gets unhooked, and you're only making things worse by freeing someone when the killer can just turn around and kill either one or both of you.

5. Running and vaulting a pallet or a window gives the killer a giant orangey circle to alert them. The signal doesn't specify WHAT happened at that spot, just that a survivor did something to make noise. Sometimes you can use this to your advantage to distract a killer.

6. Going into closets makes a noise, even if you walk in. The Killer won't get a signal like running, but if he's close enough, he'll hear the metal creaking.

7. Crouching is your best friend. If used correctly while trying to get away from the Killer, he could lose track of you.

8. If you're injured, try to avoid running if you know the killer is close. When you run, you leave red scratch marks all around you, that the killer can follow.

9. There are Killer perks that give them the big orange signal when you disturb a crow. The highest rank of this skill has a radius of 36 meters.

10. Other players can heal you. If you get rescued from a hook and the killer isn't around, walk, DON'T RUN, to a good hiding spot, or follow the other survivor and let them heal you. You can cancel the heal at any time by hitting the Run key. Default is Shift.

11. If you see closed bear traps on the map, it means the Killer is the Trapper. That means to be careful when vaulting windows, pallets, fixing gens, or saving other survivors.

12. There is a killer who does not give off a heartbeat (terror radius) until he's practically on top of you, it's Mike Myers. Don't think that just because you don't hear a heart beat, that there's no killer near you.

13. If there are 3 fixed generators and 2 dead survivors, keep an eye out for something on the ground that looks like a metallic hatch. It'll open if you have the Key as an item. The location of the hatch is randomized, and it is only visible if the number of dead survivors and the number of repaired generators adds up to 5. So if you have 3 dead survivors, you'll need 2 generators repaired for the hatch to show up.

14. If you're trying to find a game as a survivor, and the matchmaking seems to be taking forever, go to the main menu and pick the Survive With Friends option. If you ready up from there, the game will start normally. It's a workaround for a lobby glitch.

15. If you want to see the hosts ping, Google a addon called MLGA. It used to be supported by the DbD devs but not anymore because it also gives you the option to blacklist/favorite hosts you play with/against. EAC has stated publicly that they will not ban anyone for use of MLGA, and I still reccomend it, as the ingame ping tool is very inaccurate.

16. Don't drop pallets when you see them, it's a waste. Wait until you're being chased by a killer before you drop them, if you time it correctly, it will stun the killer for a couple of seconds. Dropping pallets before you need them will notify the killer of your location, as well as letting him destroy them whenever he wants. Thanks to Sakura for this tip.