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 == Adding Wiki markup (codes, charecters) == 
 === How to add latin/special characters === 
 When you edit, at the top of the edit box you will see Three Options  Advanced , Special characters and Help. 
 If you click on the Special characters you will see Latin, Latin extended, IPA, Symbols, Greek...so on. You can choose any appropriate symbols from there. 
 === How to add advanced wiki markups === 
 Simillarly when you click on Advanced tab, you will see Heading levels, Bulleted list, Numbered list, Indentation, No wiki formatting, New line, Big, Small, Superscript (you asked), subscript (you asked), then Picture gallery, Redirect, Table. simple try these out once in your user page/sandbox. 
 === Help === 
 Finally When you click on help tab you will see Fomatting (already there at top beside Advanced Tab), Links (Internal, External) , Lists, References, etc 
 And in discussion you will see how to write in a talk page using Indentation, and how to sign with or without time/date stamp. 
 :Here TWO links Wikipedia:How_to_edit_a_page and Help:Wiki_markup. Both will show you how to use briefly. Hope my help works. Any doubt you can always leave me a message.   "