Chess beginner with a question related to opening strategy

Hi! I'm a beginner, and sadly I have neither access to a trainer or a chess club at hands (nor is English my native tongue, hence I've attached the excerpt I'm goint to be talking about) However I've downloaded some books, among which is Max Euwe's and Walther Meiden's "Chess Master vs. Chess Amateur", which I'm currently working on. While doing this I've encountered a question, to which I can't find an answer. I hope you can help me with it. It revolves around Game #1, in which White, the Beginner, opens with 1. P-KB4 (the Bird opening) to put pressure on Black's K4 square. The reason behind this I have understood. Then Black, the Master, answers with 1. ... P-Q4 (the Dutch Defense) which has the following advantages and one disadvantage. (+) takes possession of Q4 (+) QP exerts pressure on White's K4 (+) opens diagonal for QB (–) it's not possible to protect Black's K4 by P-Q3

Around the disadvantage my question revolves. Euwe goes on to say, that after 2. P-QR3 it's best for Black to play 2. ... P-K3 "because it contributes most to the fundamental idea of the position, namely, the struggle for the possession of Black's K4 square".

If so, why not play 1. ... P-K4 (From's Gambit) instead? I read that it would lead to a pawn sacrifice in either the From's Gambit or the King's Gambit, so the reason, I figure, may very well be, that it's just too advanced for a beginner, so he chose an easier example? Is my reasoning correct or am I overlooking something to consider here? I'd really appreciate any input you might give me on why it was best to reply with 1. ... P-Q4.

King's gambit and From's gambit are hard to play as a beginner, they don't really follow principled rules of chess. The goal of these example games is to show principled play by the master, and show what mistakes by the beginner lose the game. For instance, although 1. P-KB4 is a playable opening, it isn't the most common among masters for a reason, and probably requires deeper knowledge of theory than what the beginner might know.

While knowing the antique notation is good for old books, the newer notations will get you farther when posting questions and talking about games. 

I don't have experience deep enough with these openings, but one great thing about chess openings is, been there, done that.  SOMEONE with some skill has likely posted the ideas behind the opening and alternate moves and so on.  

I found this an interesting read (since I don't know these openings, I learned a lot here):

https://www.ianchessgambits.com/froms-gambit.html
and a web search will get you a dozen hits that cover the opening and possibly can answer your questions.  
If you still don't see a problem with a move that isn't covered by the analysis online (and, many bad moves are NOT covered because the GM explaining the strategy didn't even consider them or think to say why a beginner may try it and get trashed) then fire up a computer that lets you practice openings or play both sides with a running analysis to see where the move goes wrong.  (That is my preferred opening study, to let the computer prove my moves bad and show the better alternate move). 

Good luck!

I got this,...

#1

"why not play 1. ... P-K4 (From's Gambit) instead?"
++ Because that loses a central pawn for no real compensation

"why it was best to reply with 1. ... P-Q4."
++ Because it occupies central square d5 (Q4), controls central square e4 (K5), and opens the diagonal for Bc8 (QB). No other move accomplishes that much.