This @YGIFS guy doesn't know what the fuck he is talking about. Here is some advice.
1) Your little girl will have broken your sorry ass down by the time she is 3 years old. You will tell yourself that she won't but it's damn near impossible unless you're a deranged sociopath.
2) Whatever age you have in mind that boys come around its earlier than that.
3) They are emotional. Very. You will never understand.
4) Start slowly working on a man cave because at some point she will challenge your wife for vaginal superiority and you will want to have your own "Switzerland" when it happens.
5) Your two ladies will absolutely be dueling banjos for who can take the longest getting ready. At some point the little one will want to wear something like the big one is wearing which is cute, then it will turn into not wanting the big one to look better than her, then it will turn into not giving a shit.
6) Their periods will sync and you will need to refer to step 4 above.
7) There will come a point in time where the information will go to momma first. Do not be offended as this is what you want. Let momma filter the stuff about periods and such. Anything important will find its way to you.
8 ) Girls as g-damned expensive. At some point you will question if you need all this shit. The answer is you do.
9) When you hear the arguing over insignificant things, DO NOT willingly inject yourself into it. In fact, you will be looked for to settle many meaningless disputes. Make sure you refer back to step 4. As the footsteps approach, the communication device of said time period needs to quickly be dawned. Simply raise a finger and mouth "it's a client". Then pace back and forth and rattle off something about 4th quarter mergers.
10) Many times your wife will be dead wrong about whatever insignificant thing they are arguing about. Perhaps you will just want to be honest. Perhaps you might see this as a chance to win points with your kid. It's a trap.
11) Any jokes or comments that would be offensive to women are now offensive to two women. Tread lightly.
12) You will think every man at the playground is a serial killer until said guy's kid comes running up to him and puts your mind at ease. Just normal behavior for a girl dad.
13) Never allow them to play with Legos. Trust me.
14) Every scantily clad coed that you used to gladly look at walking by will now bring thoughts of my daughter better never dress like that.
15) If you do laundry, DO NOT do laundry after elementary school.
16) Girls are sneakier than boys are.
17) Whatever emotional support you think she needs she will need more.
18) Teach her to do the same things you would've taught a boy. She will appreciate it down the road.
19) When she gets to the age that her little friends start coming over refer back to step 4.
20) Even when she gets older you will always be daddy. Girls cherish their fathers. Remember that through the rough times. No one will ever replace you. Even when HE comes along with his white teeth, turtleneck, and blossoming career.