I am new to PHP i have a question that as a beginner i have installed phpstrom just now. My question is that Sublime text is good or not. Should i continue with PHPStorm.

Its always important that you should have good knowledge of html and css also because when you gonna execute programs that time you will also work on html and css. All good php tutorials available on tutorialspoint. please check out

I think you should learn first some basic numpy functions like reshape, matrix, linspace etc. and then you should go like as you need

you should already have list of illegal email domains. However you can check dkim records might be they will help you