beginer opening


Good Chess Openings for Beginners...
These openings are sometimes referred to as 'beginner' openings in the sense that they have less 'theory' (i.e., profusely documented, deeply analyzed variations) to learn than many of the so-called 'strategic/positional' openings such as Ruy Lopez, Queen's Gambit, the labyrinthine 'Open' Sicilian variations, etc. The following openings are sound, fun to play and can be particularly effective in 'speed' games - bullet, blitz and rapid...
Openings For White - dynamic, aggressive and relatively easy to learn...
Introduction to the Bishop's Opening....a flexible opening...
https://365chess.com/eco/C23_Bishop's_opening
https://www.youtube.com/watch?v=AAAYOFAwfTE
https://www.chess.com/blog/RussBell/introduction-to-the-bishops-opening
The Vienna Game and Gambit.....custom made for Kingside attacking...
https://www.365chess.com/chess-openings/Vienna-Game
https://www.chess.com/blog/RussBell/introduction-to-the-vienna-game-gambit
The Scotch Game & Gambit.....very tactical.....never a dull moment...
https://www.365chess.com/chess-openings/Scotch-Game
https://www.youtube.com/results?search_query=scotch+Game+%26+Gambit
The Ponziani Opening.....solid...flexible...
https://www.365chess.com/chess-openings/Ponziani-Opening
IM Levy Rozman (GothamChess) gushes over the Ponziani Opening....
https://www.youtube.com/watch?v=TemLSMDKSMw
GM Eric Rosen and GM Daniel Naroditsky recommend the Ponziani...
https://www.youtube.com/results?search_query=ponziani+opening+eric+rosen
https://www.youtube.com/results?search_query=ponziani+opening+daniel+naroditsky
A defense for Black against 1. e4...
Against 1. e4 I recommend either of the Scandinavian Defense or the Caro-Kann Classical - Tartakower Variation (aka, Korchnoi Variation).....note that the Scandinavian is the simpler of the two defenses to learn and play (less 'theory' and fewer variations to deal with). As such I recommend to begin playing it and becoming familiar with its ideas prior to devoting a lot of time and energy to the Caro-Kann (which you may choose to incorporate into your repertoire at a later time, once you have developed your skills to a point where you feel comfortable navigating the positional/strategic nuances of the Caro-Kann). The Scandinavian would also be an instructive training ground, if you will, for the Caro-Kann as there are similarities in the initial pawn structures and initial piece deployments in some variations of those openings...
The Scandinavian Defense (1. e4 d5)...
https://en.wikipedia.org/wiki/Scandinavian_Defense
https://www.365chess.com/chess-openings/Scandinavian-Defense
https://www.youtube.com/results?search_query=scandinavian+defense+gotham
https://www.365chess.com/chess-openings/Caro-Kann-Defense
Caro-Kann Classical - Tartakower Variation (aka, Korchnoi Variation).....
https://www.youtube.com/watch?v=YsnITf68J5w&t=14s
https://www.youtube.com/watch?v=-_6qOZIlbE0
https://www.youtube.com/watch?v=cPVp5TWZR0w
https://www.youtube.com/watch?v=-MrEYqiMU4w
https://www.365chess.com/chess-openings/Caro-Kann-Defense
As White against the Sicilian Defense (1.e4 c5)...
The following openings are designed to take your opponent (Black) out of his/her Sicilian Defense preparation from the very start. That is, to prevent your opponents from playing any of the myriad, heavily theory-laden, 'Open' Sicilian variations that they have studied and hope to play, and probably know better than you do. Instead, force them to play a variation that you have studied and know well, but that they very likely have not and do not. Here are three good ones for the purpose....
Fighting the Sicilian With The Grand Prix Attack...
https://www.chessable.com/blog/grand-prix-attack/
https://www.365chess.com/eco/B21_Sicilian_Grand_Prix_attack
https://www.chess.com/blog/RussBell/fighting-the-sicilian-with-the-grand-prix-attack
The Alapin Sicilian...(aka, 'The c3 Sicilian')...
https://www.365chess.com/opening.php?m=4&n=37&ms=e4.c5.c3&ns=3.3.37#search_block_opening_explorer
https://www.youtube.com/results?search_query=alapin+sicilian
The (Smith) - Morra Gambit...
https://www.365chess.com/opening.php?m=4&n=52&ms=e4.c5.d4&ns=3.3.52#search_block_opening_explorer
https://www.youtube.com/results?search_query=morra+gambit
Otherwise....
Chess Openings Resources for Beginners and Beyond…
https://www.chess.com/blog/RussBell/openings-resources-for-beginners-and-beyond

Queen's Gambit = 1.d4 d5 2.c4 is a very 'positional' opening. Although it is a good opening It is not recommended for beginners, as there is a lot of 'theory' to learn. The QG assumes knowledge of positional/strategic concepts and techniques which beginners are typically less likely to have developed skill in. For that reason the QG is more appropriate for experienced and advanced players. The OP requested recommendations for 'beginner' openings, which is what I have provided since they have less 'theory' to learn than highly positional openings such as the Queen's Gambit, Ruy Lopez, etc.

e4 e5 d4 d5, dont play theory openings as beginner
if all he knows is the moves, maybe don't teach him any specific opening just yet. Maybe tell him to focus on basic principles, control the center, develop pieces, and castle. Then let him make his own moves for a while.

if all he knows is the moves, maybe don't teach him any specific opening just yet. Maybe tell him to focus on basic principles, control the center, develop pieces, and castle. Then let him make his own moves for a while.
Yes, it would be infinitely better than teaching suspicious stuff like the 4-move checkmate and the "queen trick" (whatever that is).