umair bhai jan
welcom on deatiling thread 
1) shampoo
for new car i highly recomend you meguiar's ultimate wash and wax, its very mild shampoo having wax in it , use double bucket method for washing.
2) use only micro fiber to wash, dry and wipe ur car no any other cloth.
no dry dusting
3) wax
i highly recomend you meguiar's gold class and meguiar's nxt wax
first apply gold class and after couple of hours curing time apply nxt, its best combo
gold class is natural wax gives depth, richness in paint and nxt synthetic wax give protection, good reflections and attract less dust.
4) fabric seats
well its depnd upon u either u like orignal seats or use seat covers, i perfer orignal seats and i use any avilable liquied fabric washing/ detergent
take warm water roughly in 3 liter water, add liquied fabric washer/ detergent in it mix it , use wash mit to dip and wipe on seats, should use double bucket to keep wash mit clean time to time
take one drying towel for drying seats.
about best place to source stuff in pindi islo requesting jugnu bhai, ali zaidhi bhai to guide u
happy deatiling
