O.K., I'm jacked up on Galatians study and information so you will be getting lots of nuggets about this blessed book of the Apostle Paul.
D.A. Carson offers this excellent set up for the study of Galatians-
This short letter has an importance out of all proportion to its size. There is always a tendency for people to think that their salvation (however it is understood) is something that is to be brought about by their own achievement. How they understand salvation may vary, and the kind of achievement they see as necessary may correspondingly vary. But that their eternal destiny rests in their own hands seems a truism, so obvious that it scarcely needs stating. Christianity has often been understood as nothing more than a system of morality, as the careful observance of a sacramental system, as conformity to standards, as a linking up with others in the church, and so on. There is always a need for Paul’s forthright setting out of the truth that justification comes only through faith in Christ. This must be said over against those who stress the importance of works done in accordance with the Torah or any other achievement of the sinner.
The Christian way stresses what God has done rather than what sinners do to bring about salvation. There can be no improvement on the divine action by any human achievement, by way of either ritual observance or moral improvement. The cross is the one way of salvation, and no part of Scripture makes this clearer than does Galatians.