In Before and After^x, Capital letters^x, Punctuation^x

Hello I wonder if anyone here could set things straight for me how to use basic punctuation space and capital letters Online computer games the web and english television series movies being my most source to learning english I have no real english education from school I find it most confusing...

Thanks very much for taking the time to post this FAQ I am new to this forum and looking for information on the use of the en dash and em dash I am a graphic designer and web designer I am currently taking a course in which the instructor provided the following information about these punctuation...