I would like to study mathematical logic, but I have very little previous background in this subject.
My knowledge is limited to some very basic concepts, such as atomic statements and how they are denoted by letters, creating new statements using connectives and understanding some of their equivalences.
I am seeking a recommendation for a reference book that meets specific criteria :
The book should be entirely rigorous, covering a substantial portion of the subject, and suitable for someone studying mathematical logic for the first time.
I would greatly appreciate your suggestions. Thank you.