By far the most common uses of affect and effect are affect as a verb and effect as a noun. The memory trick I use to help keep them straight is that affect is an action and starts with A. A is for action. Effect is a consequence or end result. E is for end. And if you have trouble remembering which is which, I would recommend trying to avoid the less common versions.
Monday Muddle: peek, peak
peek: (noun) a quick look or glance; (verb) to take a quick look or glance, often secretively Used in the expression “a sneak peek”. peak: (noun) the summit; pointed top; highest level; (verb) to reach the highest level NOT used in the expression “a sneak peek”. A sneak peak is …