in last two months , i asked many people about good text for first mathematical logic .
after that a chose some text , first order mathematical logic , angelo magrais ,
it is ok but the text uses dotty system , this system of writing is not fine for me , so i thought in changing the text and study from another text .
or , i need some essays or topics to be fammillar with dotty system ,
let us talk about the first option , changing the text ,
i read about , a concise introuduction of mathematical logic by Wolfgang Rautenberg .. and also about , mathematical logic by Ebbinghaus ..
but i read some comments says that these two text is not excellent for a first course and the learner must study first from simpler text then go to study from these text .
but i don't know what are these simpler texts ! , so , i'm very confused . i also read some first sections from , mathematical logic part 1 by Lascar and Cori .
so my question is , which texts are excellent for first course in mathematical logic ? and why ?
which topics should be covered in this first course ?
is any of the texts which i mentioned is suitable for first course or not ?
i really hope that you can help , i'm very confused about the good text - or texts - which i should start from .