Good advice. When buying a tuner look for a "chromatic" meaning it can tune ALL frequencies (within a certain range) no more than $40. This will give you more flexibility down the road. String names from high (the skinny one) to low are E B G D A E. And your first string change will probably be awful. Leave extra room and try to keep the winds even. Good Luck!
Along the lines of the first string change; don't try to tune the strings until they're all on and in the general vicinity of the correct tension.
It takes some practice until you realize you really have to tune all six strings at once until everything is tuned approximately right. Then you can fine tune on a string-by-string basis.