ESP8266-01 is not working and it's hot
when a chip gets hot as soon as the VCC/GND is connected, it means :


The VCC/GND are internally connected due to a previous failure (it
gets hot AFTER the accident). 
An output pin, is connected to a supply rail through a very low resistance load (or short circuited). pins usually sink or
source as low as 20mA of current. so if you connect them to a load
less than (3.3/20)*1000 ~= 150 ohms (in your case with 3.3v supply),
you are going to fry the output driver. always be sure that a pin, even if it's defined as an input, has a little resistor (a 220 ohms res).
this accident happens between output/supply or output/output pins.


you may have misconnected TX pin to a wrong pin.