Google
Google is a great reference tool. You can use Google to check your grammar, spelling or expressions. For example, if you are not sure whether 'on the Internet' or 'in the Internet' is the right phrase, the fastest way to get the answer is typing "on the Internet" in the Google search box to see whether others use it that way and then follow the same procedure with "in the Internet." In this case, you will find all the sentences are written with "on the Internet". So "in the Internet " is incorrect. You can also use Google to find the accurate spelling of the word you are looking for. For example, you learned a new word a few days ago, but you forget how to spell it now. Type the partial word you remember into the Google box. Google will show you the possible right word - be sure to check the definition!