mysql -> postgres

I have been using MySQL for quite some time and feel
right at home with it..... I would like to begin learning
postgresql.

I have just installed it (as a Debian snob, apt-get made that
pretty brainless), and need a starting point.

Using MySQL, I am spoiled by mysqlshow, and walking right
into the mysql db and setting up perms for something I created
with mysqladmin create 'dbname'. This is my only baseline, and
would love for someone to point me to some docs that address
the basics for postgres.

v/r
mike