One way to rephrase "You might be able to" is "Maybe you will be able to". So "might" means "maybe" but the grammar of it is different:

• "Maybe" comes at the beginning of the sentence, while "might" comes right before the verb ("be")
• "Might" replaces the modal "will". "Maybe" is used along with "will" or other modals ("should", "can", etc.)

For native English speakers, it's more common to say "You might..." than "Maybe you will..." If you can learn to use "might" correctly, it will make your English sound much more natural.