OK. "As for" is often used to introduce a new topic or to refer to someone or something specifically. For example, "As for John, I haven't seen him recently."
"As to" is a bit more formal and is used to indicate regarding or concerning a particular matter. For instance, "As to the problem, we need to find a solution quickly."
In many cases, they can be used interchangeably, but the choice often depends on the context and the style of the writing or speech. Do you think you understand the difference now? Can you try to make a sentence using either of them?