This album was praised for being a breakthrough into new musical areas. Harrison was experimenting with more indian music, backword recorded guitar phrases, and the use of other studio effects.
"If you get too cold *Paul*"
A reference to the state of a body after death.
"My advice to those who die - Taxman"
Think of 'Taxman' as a Taxadermist - one who preserves the remains of the dead.