Re: Common expressions in English
It's nice that you want to say thank you, but the best way to do that is to "like" an answer you found helpful (or just to show that you appreciate that the person tried to help you). You surely do not need three posts with no real new content.
When we see a thread has a new post, we think there must be a new question.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.