Guts = available from the start of the game, you don't need to search for him.
Jackie = on the east side of the valley there is a path that exits the valley. try to leave and he will appear.
Jet = go upstairs in the Inner Inn, and press A at the nothern side of Van's orange crate.
Roller= on 8 spring, walk across the bridge leading to Vesta's farm.
Jum = press the A button while standing in front of the fountain at Romana's mansion.
Tep = To the left of the Inner Inn there is a stove. Hop over the fence by pressing A, then press A again whilst standing in front of the stove.
Hops = There is a well next to the Blue Bar. Press A while standing in front of it.
Chat with our AI personalities
You have to get the casino in the sprites house and play the games to get medals. Once You earn enough medals, you can go to one of the sprites at the front desk and exchange medals for prizes.
You have to find all 101 harvest sprites
you befriend the ones you have
http://uk.faqs.ign.com/articles/733/733426p1.html all the sprites are on there :D
After the 8th of Spring, walk across the bridge near Vesta's farm. Roller will appear and open up the Casino in the back of the Sprite Tree. hope i helped for more info on where to get harves sprite go on: http://www.fogu.com/hm6/chan3/sprites/index.php it goes straight to the page about harvest sprites