If you're not insisting on running blindly the first time even if you're not specifically running and aiming for a specific PoE build, it's helped immensely to POE currency trade get educated about the mechanics of this game.

One PoE Build for Now, and a second for later.

If you've been playing MMOs previously, particularly hack-and-slash ones, then you'll be aware that the fastest method to progress is to take out all monsters in the least timeframe, and the best method to accomplish this is to make use of AoE spells. Actually, the majority of PoE builds focus on dealing AoE damage to clear the map as fast as they can. That's the reason why for many of the endgame builds that aren't designed around that specific technique, a dedicated build for leveling is needed.

Here are some of the most sought-after essential skills that are required to use in Path of Exile leveling builds:

Blade Vortex

Fire Trap

Storm Brand

Static Strike

Armageddon Brand

Cleave

Firestorm

Vortex

Winter Orb

Spark

Purifying Flame

As a side note, There's a constant debate in the PoE community about whether it's more beneficial to have a separate Path of Exile leveling build or to cheap Path of exile currency move to the final build as soon as you can.

Grinding In The Present Versus The Later

There are pros and cons for each. If you choose the first option you'll have more efficiency as you're operating at the fullest capacity of what the build can currently handle as opposed to the endgame builds which require gems, gear for the endgame as well as abilities that are passive.