To make that a little less confusing, use then when time is involved.
EX: I went to the store, then I went home.
You use than when you are comparing two things.
EX: I rather eat chocolate ice cream than vanilla.
A challenge for anyone who leaves a comment. Try to come up with a more confusing way to explain than and then. You must use then and than correctly when stating when then would be used and when than would be used!