some questions about maintenance

1-i hear a weird air sucking noise around the throttle body is that normal without touching the accelerator or anything, just in idling normal operating temperature

2-also i have weird vibration at my steering wheel and one of my friends looked at the engine mounts and said it needs changing maybe the weird sucking noise is the problem?

3- also i have a leak or something around throttle body i wonder what is that 

4- also i have some kind of leaking on top of the transmission 

i attached some photos of the leakings

octavia mk2 mpi 1.6