If you want to give your readers a good impression in your English writing, you should avoid misspelling. Misspelling makes the writer looked stupid and unprofessional. It is important to spell English words correctly.
One of the most important spelling rules to help you to learn the correct way to spell English word is: [i] before [e] except after [c].
[i] Before [e] Spelling Rule
[i] before [e] except after [c] Spelling Rule
You should remember that [i] usually comes before [e] except after [c] or when it is pronounced like "a" as "neighbour"