How to master piano key

Major keys in a piano
C
D
E
F
G
A
B
                           Minor keys
C__sharp
E^
F^
G^
B^

             Major scales
d  r   m  f   s   k   t    d
1. 2. 3.  1   2.  3.  4.  5----------Right hand
5. 4. 3.  2   1   3.  2.   1---------Left hand

the major and minor key composition are.
Doh---------d:m:s-------major
(di-----------di:mi:la----minor)

Re----------re:fa:lah-----major
(moh------mo:fi:lah-----minor key)

Mi----------mi:so:ti----major

Fa----------fah:lah:doh----major
(fi-----------fi:lay:reh-------minor)

Soh--------soh:ti:reh------major
(si,--------si:ti:mi-----minor)

Lah------lah:doh:mi-------major
(toh------toh:reh:fah------minor)

Ti---------ti:reh:fan(soh)

scale fomular

T----tone
S----semitone
       

                 Inversion

Root:     doh:  mi:   Soh
1st inverse.   mi:   soh:   doh
2nd inverse:   soh: doh:   mi

     in other words try placing tour hands on the key and play this out counting from left or right side of the key the 7keys above and then try plying this on the keys

Ti----- reh: soh:    then doh
Mi-----soh: ti.    then fah
Fa-----lah: reh.    then soh
Moh---fi: lah:      then. mi