sensors

I want someone help me connect a ldr to ligth a led and also a lm35 to turn a motor

Hi and welcome.

You can't connect a LDR to a LED (doesn't make any sense). A LDR is a sensor and you need some other stuff in order to get the LED emitting light.

A LM35 is a temperature sensor in a TO92 case, and therefore looking like a transistor. You can't connect a LM35 to a motor and get the motor to run. For this you also need some more (smart) stuff (like your Arduino).

Tell all there is to be told, else your questions can't be answered correctly.