One of the biggest mistakes for bloggers is to get spelling or grammer wrong. If you want readers to think you are some kind of expert or authority on a subject then don’t spoil their impression by getting some basic English grammer wrong.
Do note that there are two main flavours of English – British and American! I say ‘flavour’, you may say ‘flavor’. The differences are more than just single word spelling. Sometimes words are completely different, like ‘tap’ (British) and ‘fawcett’ (American).
More confusing is that we may use the same word for different purposes. In Britain, ‘chips’ are what American call ‘fries’; to Americans ‘chips’ are what the British call ‘crisps’. Grammer may vary too, so be careful!