Is it a difficulty getting the car out of park? With the ignition key switched on, when you put your foot on the brake pedal you should hear an audible click in the center consul at the gear shift lever. An electrical signal from the brake switch powers a solenoid to allow the shift lever to move out of park. I've seen problems in this circuit.
If it is the shift lever that is hard to move the center consul may need to be removed or the shift cable may have to be inspected under the car for damage.
Check the transmission oil level. It is checked with the engine switched off on your car.