average age for walking babies

baby milestones – average ages?
hello, I have a 4 week old baby at the moment, and ive realized i have no idea as to when i should be looking out for certain milestones!
if anyone could answer a few id be very grateful! I know his smile should be along soon, and ive noticed he’s beginning to hold his head up a little more, but could anyone answer…
total support of head (floppy heads scare me! lol)
crawl?
walk?
first words?
first sleep thru the night?
use of their hands?
understanding what we are saying?
I know they differ from baby to baby, im just after the average.
any others are more than welcome!!
thankyou
My little man who is now 20 months was able to smile, laugh and hold his head steady by 3 months old.
by 4 months he was playing with his hands and feet and able to roll from his tummy onto his back, be soon learned to turn onto his tummy from his back, i think he was 5 months old by this time.
by the time he was 6 months it was so cute if you said something like bang to him he’d try and copy it (i think it was 6 months either that or 5) but it would come out something completely different and so funny!
7 months was when he said mum and began crawling (a big month for him
! and this was when i noticed he understood when i said things like ‘no’ and ‘kisses’ and ‘cuddles’ and things like that. although he didn’t give cuddles until he was about 14 months old haha!
by 9 months he was walking and gibbering away to anyone and everything (even the dog!) although you couldn’t understand what he was saying
by about 14-16 months was when his terrible twos kicked in early and the tantrums began! he also started talking more clearly saying no to everything! this is when i new he understood almost everyhtin I said to him.
Now he’s 20 months old and likes his independance, he puts his shoes on himself can have a general conversation with you and is my little angel
x
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