The simple present tense is one of several forms of present tense in English. It is used to describe habits, unchanging situations, general truths, and fixed arrangements. The simple present tense is simple to form. Just use the base form of the verb: (I take, you take, we take, they take) The 3rd person singular takes an -s at the end. (he takes, she takes)
There is a little confusion on how to use the words use to and used to. One reason for the confusion is that it is sometimes used as a verb, and sometimes used as an adjective. The other reason is because it seems like the tense changes. It's really quite simple when you look at it.