Can I activate a card like Dark Hole in my Main Phase 1 and after its resolution, summon a monster and proceed to the Battle Phase? Thanks in advance.

Yes ___________
limit limit limit Į50charatherĮ
:knockedou

easy qeustion,the rule book could have told you that

As long as...

A.) You did not already Normal Summon or Set a monster that turn

B.) No card effect prevents you from doing so.

Also, remember that you can not "save a sacrafice". you can not tribute two monsters on your side of the field, dark hole, and then use those sacrafices for dark magician. It doesnt work like that.

Yeah...whenever something requires a sacrifice(s) you must make ALL the necessary sacrifices in that turn.