What type of keyboard or piano should I be using?
It depends on your requirements and budget! If learning the piano has always been your dream then it would be better to find a piano, clavinova or keyboard that is touch sensitive (the greater the strength with which you press the keys, the louder the sound) and also to have weighted keys (to build up strength in your fingers and mimic the feel of a real piano). If opting for a keyboard I would recommend buying one that has at least 5 octaves.

My child wants to learn the piano but i´m afraid it´s just going to be a phase.
As a starter, buy a reasonably priced keyboard with a few sound options to add the fun element to playing. If possible try to find one that is touch sensitive with full sized, weighted keys.

How often should I practice?
As much as you like! The more you practice, the faster you learn. I recommend 30 minutes per day for beginners. Best results will be acheived by regular practice.
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