The two most common usages for the present simple tense are habits and routines, as well as general facts and truths. Our example of routine would be 'I teach every Monday.' We've used our subject 'I', our base form 'teach' and 'every Monday' speaking about the routine that I have. We also have our general facts 'The sun rises in the east.' Here, 'the sun' would follow under the pronoun 'it' so we've had to conjugate our verb per our pattern and finish our sentence. We could also talk about general truths such as likes or dislikes. 'I like football,' or 'He likes football.' Of course, there are other usages but these are the two most common.
Below you can read feedback from an ITTT graduate regarding one section of their online TEFL certification course. Each of our online courses is broken down into concise units that focus on specific areas of English language teaching. This convenient, highly structured design means that you can quickly get to grips with each section before moving onto the next.