Check out this very useful article detailing six important grammar rules you need to know about. Learn about many common mistakes people make when using certain words to make sure you do not make them as well.
The personal pronouns thou, thee, thy, and thine are well known from various Shakespearean plays and literature from that time. Now, these words seep into modern society - via memes. Find out how to use them properly and show off your skills!
Like it or not, spelling matters. Whether you're trying to get a job, submit something online, or just writing an email to someone you want to impress, having misspelled words is going to hurt you. Regardless of the reason for your misspellings, none of those impressions you are giving out are good ones.
For all occasional writers, language students or just busy people who need to write in a language they don't feel 100 % sure, there are two options: Option 1 is learning all these "simple spelling rules" that will cause you nightmares trying to remember them. Option 2 is to outsource the rules to a spell checker.
One of the most popular searches in Google is one that is related to "how to spell difficult words". You will find tons of sites listing the most commonly misspelled words in English. The spelling does not follow the pronunciation in a high percentage of words.