How to make different kinds of symbols from keyboard???

Alt + 1………..smiley face
Alt + 2 ……☻…..black smiley face
Alt + 3…………. Heart
Alt + 4…….♦……Diamond
Alt + 5…….♣……Club
Alt + 6…….♠…..spade
Alt + 11…..♂……male sign
Alt + 12……♀…..female sign
Alt + 13……♪…..eighth note
Alt + 14……♫……beamed eighth note
Alt + 15…..☼…..sun
Alt + 18…..↕……up/down arrow
Alt + 24…….↑…..up arrow
Alt + 25……↓……down arrow
Alt + 26…..→…..right arrow
Alt + 27……←…..left arrow
Alt + 29……↔… left right arrow
Alt + 251…..√…..square root check mark
Alt + 0153….. ™… trademark symbol
Alt + 0169…. ©…. copyright symbol
Alt + 0174….. ®….registeredtrademark symbol
Alt + 0176 …°……degree symbol
Alt + 0177 …±….plus-or-minus sign
Alt + 0182 …¶…..paragraph mark
Alt + 0190 …¾….fraction, three-fourths
Alt + 0215 ….×…..multiplication sign
Alt + 0162…¢….thecent sign
Alt + 0161…..¡……upside down exclamation point
Alt + 0191…..¿…..upside down question mark
Alt + 8236…..∞…..infinity
Alt + 8721…. ∑…. N-ary summation (auto sum)