Shaving?????!

Shaving?????

this may sound silly but what is the correct way to shave your beerd and tash etc do you shave downwards or upwards and do you use hot or cold water reason i ask is i have been shaving downwards and realising i can still se some of the haire (not the closest shave and doesnt last) but have shaved upwards and found i cut myself more but the shave lasts

also i have been coming out in an itchy red rash when shaving even though i put plenty of shaving gell on and spots come out too

oh yeh also i use gillett fusion manual razor so that shouldent be the problem

also how often should you shave

please take this question seriously coz unless someone tells you your not going to know instantly thanks

after shaving put lotion so it does not itch