shortcuts for beginers

What is the best shortcut for a beginner player to use to save time and ease of use?

For long-term improvement, there are no shortcuts; it is mostly just hard work on your chess, experience and playing/analyzing a lot. You learn slowly over time step by step. 

However, certain things are really useful for learning chess quickly, but this isn't a shortcut - but rather just efficient learning. 

Some key things to learn which may speed chess learning some are:

- Learning basic checkmates like King + Queen vs King or King + Rook vs King

- Learning basic theoretical endgames like King + pawn vs King how to win this ending utilizing King Opposition and when this endgame is a forced draw with best defense

- Solving lots of chess puzzles/tactics to help increase your pattern recognition ability

When starting out, chess opening principles is "sort of" like a shortcut because it doesn't require memorizing opening theory, but this is also fundamentally solid:

https://www.chess.com/blog/KeSetoKaiba/opening-principles-again 

@1

Study Chess Fundamentals - Capablanca. It is only 60 pages, but contains all you need to know.

Solve 4 tactics puzzles as a warm-up.
Play 15|10 rapid only.
Use all your time before move 30 and finish on increment.
Whenever you lose a game, stop playing and analyse it.

i meant like shortcut on a keyboard but the advise is still very useful. thank you

Oh, this makes a little more sense; should have been clear about it in the original post

Chess is chess and you don't really need any shortcuts; it is a game of thinking more than dexterity (unless bullet and even then, there is a lot of thought at the higher levels - just a different type of thinking). 

Many players play chess without using any keyboard shortcuts. The only shortcut I use somewhat often is I enable "auto-promote into Queen" in my Live Chess Settings and mid-game if I ever want a pawn to promote into something else, then I can use the keyboard shortcut of holding ALT while I promote my pawn and this lets me choose manually. 99% of the time, the Queen is best, so auto-promote on with the keyboard shortcut for the exceptions saves a smidge of time. 

This is the only keyboard shortcut I use fairly often.

A helpful shortcut is right-click + (Control, Shift, Alt, or Nothing). This enables you to color squares differently. However, if you drag, then you can create arrows. Be mindful that if you left click, it all goes away. For Example: