Either is correct. Where did you get your manners is somewhat strong, more accusative. Where did you learn your manners is more polite yet makes the point. Good job.

what I experienced today

I just want to write about what I experienced. I got up early today, then after breakfast, I went to work. My job is related to the E-commerce business of about selling human hair to foreigners. After all, I have studied English for many years. I want to use my English to help my work, but in China most people are not confident enough to speak English in public. Such As for me , my oral English is not influent. What I said is slightly off the subject. Although tired everyday, I also strive for bright future.  I hope the people who read these words understand what that I talked about a bright day.

Your English is very good, but as in all languages, there are small exceptions to the wording.  I hope this helps.

We're different everyday

I ain't anyway going back to be my old self.Even if i was,that's rather a good thing to me.After all,there are not two days that are totally the same.we are going to change day after day.We're going to be different.

I am not going back to being my old self.  Even if I were, that would be a rather good thing for me.  After all, there are no two days that are totally the same.  We are going to change day after day.  We're going to be different.

"Ain't" isn't really a word, but it is used commonly by those that are not well educated.  No school in the US would encourage the use of the word "ain't."

But good job!

Some sentences.

I´ve just written some sentences down to practice my last english lessons. I'm trying to deal with advanced grammar so that I can improve my english. Although, I make too many mistakes I really don't mind, because a nice english native person will correct my entry; I also help other people who are learning spanish.

- I just wanted to hang out with him because I thought he was a kind person. However, he decided to drop out our relationship.
- Someone ripped me off when I was trying to sell some stuff by  (suggestion: on the) internet.
- It's well- known that some burglars break in houses at nights.
- I couldn´t manage to get on the bus with my chair wheel.
- I used to get on very well with every type of people.
- He gets angry very easily, but yesterday he blowed blew up as usual.unnually.
- I don't have fun slipping up when while I write in English but it's necessary if I want to learn.
- I figured out what he was saying, but it was difficult to for me.
- The famous singer got bothered when the television broadcast her private life.
- In life sometimes we have to overcome unexpected obstacles and look (suggestion:  forward) up to new upcoming situations.
- It's hard to endure some issues but if you struggle against with them you'll achieve everything you want.  This sentence is slightly awkward, but I do understand.
- I saw him on a video but I have no words to describe what I felt for him. It was at first sight love.

This is very good work!

Easter

This morning I woke up happy to see the joy of my daughter looking for Easter eggs hidden at home.
Happy Easter to all of us.  or Happy Easter to everyone.

Happy Easter to you.