Beginner Openings

There are many of them... my favorite is the Vienna Game, or the London System.

Most simple and solid is to defend 1 e4 e5 and 1 d4 d5 as black and to open 1 e4 as white.
The Ruy Lopez 1 e4 e5 2 Nf3 Nc6 3 Bb5 is probably the best opening for all levels.

this is the most begginnger opening:

play the ruy lopez and learn basic sidelines and principles, the spanish is perfect for learning, closed/open/ positional/agressive

Stonewall attack as white, Sicilian dragon and benko gambit as black

Why is Benko gambit a beginner opening

So I just started a series on calculation. Right now it's building on the basics but it's going on building a framework from opening to endgame.

Each post is like a 1-2 minute read.

https://www.chess.com/blog/Dumbluck626/the-5-opening-principles-you-need-to-know-calculation-part-ii

This is the most recent one. Hope it helps

i only play bullet and 3+0 blitz and i play latvian gambit every game as black and sodium attack or amar opening as white