JR pass in osaka & Kyoto

Can we use the JR pass in osaka under the JR Yamanote line?

Any recomendation for places to go in kyoto for one day?

Can we use the JR pass in osaka under the JR Yamanote line?

The Yamanote Line is in Tokyo! The Japan Rail Pass can be used on JR trains nationwide:
http://www.japan-guide.com/e/e2361.html

Any recomendation for places to go in kyoto for one day?

Here you go:
http://www.japan-guide.com/e/e2158.html

Osaka has a JR loop line that goes around many of the places you are likely to want to visit. others places are a subway ride away.
in Kyoto buses are the way to go and a day pass isn't expensive

I would like to recommend the places in Kyoto.

1) Kinkakuji (Gold Pavilion)
2) Ginkakuji (Silver Pavilion)
3) Kiyomizudera

I went there last year...quite nice.

Also you can buy Kyoto sightseeing card at Kyoto Station. 1 day around 1,200 Yen - Can use all buses & subway.

If you buy 1 day subway, it costs 600 Yen....but you also need to take the bus on some place. Subway alone is not enough. The bus fare per 1 ride = 220 Yen