(vermlion city) You have to find two switches underneath the trash cans. find the the first switch, but if you incorrectly guessed the second one, the electric doors would reset.
(sabrina)1. Take the only warp square.
2. Take the bottom-left warp square.
3. Take the bottom-left warp square again.
4. Take the top-right warp square.
5. Take the bottom-left warp square.
6. You should be in the gym leader's room