1.share with sb sth or share sth with sb is fixed application.here the littli bit of knowledge of English is sth in the application.
make it simpler,the little bit of English knowledge.here "little bit of" is a fixed application,the second "of" means belonging,it means "de" in chinese.
2.here it uses would to express sb's emotions.it is following sb,here it is I.
3.here is uses will to show a future action.