Merhaba, Benim adım Erin, Ben Türküm ve Ankara'da yaşıyorum, 29 yaşındayım. (just add your own name hometown and age, that's all) Have a good day

There are not exact rules for that. It depends on your relationship with the person you talk. Sometimes I say "abla" to a person who is just 2 ages older than while I do not say it to my friends who are 10 years older than me. What matter is your relationship. But if you cannot decide it, you can choose saying "teyse" to a woman who is nearly 20 years older than you, before that, "abla" is better. On the other hand "yenge" is definitely different word. We say abla and yenge for our relatives or for people who are not relatives but have older ages. But yenge just refers a relative relations. Yenge is a woman who marries one of your relatives, brother's wife, cousin's wife are all "yenge". But in the daily life some people can use it instead of abla or teyze, just like saying bro to an unfamilier man in the USA, but as I said it's not a common way to talk to people

When someone say lots of things which are not necessary to tell something you use "sadede gel". For example When a child wants a permission from the parents and tell lots of things they can answer with it. Look at the diolog below: A: Anne bugün okulda bir arkadaşım rahatsızlandı, durumu çok kötüydü, annesi de yokmuş, yalnız kalıyormuş, ona bakan onunla ilgilenen kimse yokmuş. Çok zor durumda kalmış, ne yapacağını bilmiyormuş. Onun için çok üzüldüm B: Sadede gel A: Bugün onunla kalabilir miyim? It's very informal way, you cannot use is in formal languale. It's just an example. You can also use it for force someone to make a conclusion. For example: Öğretmen: Ödevini yaptın mı? Öğrenci: Dün çok hastaydım, bunun için yataktan kalkamadım, başım ğrıyordu çok ateşim çıktı. Öğretmen: Sadede gel Öğrenci: Ödevimi yapamadım. I hope it's helpful