This document outlines several articles from the Republic Act No. 386 regarding contracts. It discusses essential elements of contracts including consent between parties, a certain object, and valid cause. Consent requires a meeting of offer and acceptance. Certain individuals like minors cannot provide consent. Consent can be invalidated by mistake, violence, intimidation, undue influence or fraud. The object of a contract must be determinate and within commerce. Services and rights can be the object of a contract unless prohibited by law.