We have orthodox Christian beliefs, based on the Bible.
We believe in the Trinity, that Christ died as the only sacrifice to make us acceptable to God, that no-one is good enough to receive the favour of God nor is anyone bad enough to not receive it, that we gain heaven by faith in Christ alone not by what we have done or by what we have avoided.
We believe that whatever happens, God is in control and that we may know his love simply through personal trust. There is nothing we can do to get his favour; it is a free gift.
That is a brief summary of what we believe. As it happens Presbyterians have a detailed, 33 chapter, circa 16000 word statement of beliefs. Its called the Westminster confession of faith. See the next page to read it in full.