Video Explanation on Simple Sentence (theory)

Step 1. Watch and Remember 

 https://www.khanacademy.org/humanities/grammar/syntax-sentences-and-clauses/types-of-sentences/v/simple-and-compound-sentences-syntax-khan-academy
Step 2. Practise what you watched
https://www.khanacademy.org/humanities/grammar/syntax-sentences-and-clauses/types-of-sentences/e/simple-and-compound-sentences