I need knowledge

greetings, i'm student who has recently started to develop android applications on Eclipse, first that nothing i want to ask everyone ,
where do you think is better to develop appilications on eclipse or android estudio? ,
i want to know if there is a recommendation for book's about android develop ,
is there a page, video or a book who explain about how to use social networks as facebook in an android app

the last question is about , i recently finish a certified on movil applications, but my school does not offer a good one so, mine knowledge is short, to short i would said, so i start this project on my school about an app who tell the students all the events or notifications about school, but, i want to know if i can download that information from the oficial page on facebook
you may think why i want a application if facebook do the work? well not all stuents like facebook and not all of them check it often so with a special app it would be a better wait to communicate the information in my school

i would appreciate any kind of help, thanks.
ps. i from mexico , so if my grammar have error i would appreciate if you can correct them.