There are many different Rune sets, the most common being Elder Futhark, so no the runes won't always use the same symbol. You can find more information in these sites:
I'd also like to suggest you read 'Runes: Theory and Practice' by Galina Krasskova. Many people prefer to work with the runes, get connected to them, and get their own understandings of the Runes' energies before they cast them. However, runic divination can also be a wonderful way to get more connected to the runes, but may take some time and effort before one can correctly read what the runes are trying to say.