Scales and arpeggios

[kekewak]

Hello guys!
I started not so long ago to practice scales and arpeggios since some friend told me how useful it is. I got a few small doubts though, for example, ¿Should I practice the minor scales in natural, harmonic or melodic? and for the arpeggios, In hanon the arpeggios simply go up and down, but in pianostreet, the arpeggio practicing sheet shows the arpeggio in root and both inversions, ¿Which one is more recommended?

Thanks!

[faulty_damper]

Are you learning them for technical (movement coordination) or for theoretical purposes?  I suggest learning them for both.  The former is very difficult and requires significant amounts of time to learn the most efficient ways coordinate your playing apparatus.  The latter is straightforward.

[kekewak]

Yes! I'm doing it for both, I can se how useful it is in a technical level since many songs use chord arpeggios and progressions and also for runs in improvisation, and theoretically so I can really understand and know my scales

I was wondering If I should practice the arpeggios in each chord inversion, ¿Should I? (as shown in the technique sheet from piano street)

[faulty_damper]

You'll find that some inversion fingerings are identical to root position.

Anyway, the technical goal is to coordinate the movements so that it is effortless regardless of tempo.  If you have muscular strain anywhere, that's a fail.