Apple's default keyboard encourages lazy typing, especially among younger users. No more commas or periods; everything is the ...
The most important thing with punctuation is to make sure your sentences are correctly marked at the start and end. The starts are easy - they should all have capital letters. Check through to ...
Check whether a full-stop or semi-colon would be more effective. Avoid excessive use of exclamation marks. Be ambitious – practise using sophisticated punctuation such as semi-colons and colons.