This report describe two different topics. A major subject is a free surface of superfluid 3He studied by electron on the surface and ions under the surface. Transport properties of Wigner solid on the surface has been explained by taking into account the surface texture. The mobility of electron bubbles under the surface is carefully measured to verify the contribution from the Andreev bound states. However, no confirmation of such contribution is obtained. It may be possible that such a contribution is still prevailed by bulk excitations. The detection of Majorana fermion will be briefly mentioned. The torsional oscillator response of solid helium is studied under rotation. Results might imply a preferential explanation in terms of supersolidity in a similar context of superfluidity.
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