Hari worship

Acharya Madhva says , there are ten places of worship of HARI , what are they ?
1.chakrabja mandal
2.Bhadrak mandal
3. saligraam , Pratima
4.Surya
5. hrudaya
6.Cow
7.Guru [ bramhana sanyasi ,mata, pita ,vruddha ]
8. Tulasi ,ashwathh
9.Agni,nadi , samudra
10. Keval sthale .[ bhumi ]

Everyday without eating prohibited food , keeping oneself clean one should worship Lord in these ten places [ prateek ] .
Pratima are of eight kinds ,
1 made of wood like devadaru
2. of stone
3. metal
4. mani [ precious gems]
5. mud.sand
6.cowdung
7.drawing photo frame etc
8.imagination in mind [ manomay kalpana]

In temples avahana is not required . elsewhere it is aichchik [ as per wish ]
in photo snana is not required . prokshana is enough

in agni one can worship by giving ahuti .
In surya by gayatri
in water nadi samudra by giving tarpana .
in hrudaya by worshiping japa ,DHYANA of bharatiramana mukhyapranantargata BIMBA rupi HARI .
In guru bramhana by dana bhojana namaskara and shravana .
In tulasi ashvath by pradakshina namaskara .
In cow by poshana . go gras .
In Bhumi by drawing rangavalli .

So everywhere one has to worship specifically NARAYANA in various ways . IN these places fit for worship is , chakrabja mandala . It is a mandala which enumerates the evolution of all vidyas from Pranava . it encompasses all mahamantras . shimshumaar rupi hari and Nakshatra purusha VISHNU .
I was taught by my guru chakrabja mandal upasana and manas chakrabja homa ahuti . it gives much relief from doshas and evolves swaroop yogyata.