Follow the route west of ecruteak. At MOOMOO farm go south.
you dont ignore that you find it at the bottom of olivine city. hope i helped!
In the house next to the Pokemon center in Olivine city the sailor sitting at the bar will give you HM04 [strength] after talking to him.
at olivine city
you can't find it... but at heartgold and soul silver you can find staryu at route 19 and 34 and also cherrygrove town, Cianwood city, and Olivine City.
Olivine city map.
You can find the good rod in Olivine City, someone will give it to you in the first house below the gym. :)
if you mean HM04 strength... its in the cafe in olivine city, talk to the guy and he will give it to u
in olivine city
Go to Olivine city from 1 in the afternoon to 2 in the afternoon. When you are there at that time, go to the Olivine Dining Room which should be next to the gym. There, you will find her and she'll give you her number.
Chuck, the fighting-type gym leader, is located in Cianwood City, south of Olivine City. You'll need Surf to reach the town, though.
In the house beside the Pokemon center in olivine city
Mew can be found in Olivine City where Jasmine is.