We do not believe in "Sola Scriptura" this is true, but we do believe the Bible is the highest authority of the four, and our rule of "faith and practice and containteth all things necessary to salvation". Below this is "holy tradition", followed by experience, and reason.
This is true. We believe however that God gives us his prevenent grace, so it is all from him. He gives us the ability to choose to believe, but it is up to us to accept or reject God's justifying grace.
We also believe in the real presence, but do not define how God works. We call it a Holy Mystery (the Eastern Orthodox also hold this view). We view the Sacraments as means of grace.
We also believe in Salvation by grace through faith. Works are the end result of faith, but have no saving merit.
The United Methodist Church accepts the ancient creeds of the Church, the Nicene Creed, and the Apostles' Creed.