[QUOTE=nomi 60;867553]How can I reduce my spelling mistakes?
Please give me some solid ideas.[/QUOTE]
Welcome to Using English.
First, note that we do NOT form plurals by adding an apostrophe. The plural of mistake is mistakes, not mistake's.
Second, please note that the personal pronoun I is always capitalized.
To answer your question, I assume you don't want a REASON to spell correctly, but some IDEAS on how to spell correctly.
I'm a bad speller myself. I have to use a dictionary quite often. Find a good dictionary and use it.
You can also google "commonly misspelled words" and study those lists.