If you beat all the gym leaders then you can try to beat the Elite Four, or you could go get the National Pokedex. (If you've beaten all the gym leaders, your doing pretty good!)
you beat them in a battle
You have to beat all the Johto gym leaders.
you have to go to every gym in kanto a beat all the gym leaders
Beat 16 Gym Leaders.
After you beat all 16 gym leaders AND Red. The just go to his lab.
You have to beat all eight gym leaders and then talk to professor oak.He will then give you a master ball.
All you have to do is beat gym leaders then the allow you to use HM's out of battle but ether before or after battling the gym leader. Good Luck!
To get rock climb you have to beat all 16 gym leaders, red and talk to prof oak
you start out in the johto region if you mean kanto you have to beat all the gym leaders and the elite 4
you find it in the cerulean cave behind cerulean city after you beat all the Kanto gym leaders
beat all the gym leaders to get the masterball beat all the gym leaders to get the masterball
you get a ticket on the s.s. boat to veridian city then you have to beat all 6 kanto gym leaders Then face RED (ash)