could you help me?

The word pre-president is not correct in itself.

You could say, for example, pre-President Lincoln's term of office.....

Thread Titles

The subject should be relevant to the topic or question.

Ideally the subject line should be able to summarize the question.

Using a relevant title will greatly increase the chances of an answer.

An example of a bad title is: "HELP ME!"
An example of a good title is: "window shopping?"

Using all caps and screaming for help will usually mean most people ignore you.

If you use a relevant title with relevant keywords more people will find your topic.

Do you understand this!

thank you!
It is a good advise for me,thank you very much!