In Diablo 2 Resurrected, the most reliable way to identify loot is by using Scrolls of Identify. You can either buy these, or get them from enemy drops. Being so useful, they are one of the most common drops in the game. To use them, go into your inventory, right-click on a Scroll of Identify, and then click on the unidentified item in your inventory to find out what its actual stats are. A big advantage to using scrolls of Identify is that you can use them whenever you choose, even in the middle of a fight. You should always carry at least several of these with you at all times so that you can quickly figure out if that latest drop from a boss enemy is worth keeping – maybe even equipping.
Considering that Diablo III is a game that pretty clearly leads the player through everything, and players have to beat the story on normal mode, which for the most part isn't very challenging in general, while Diablo II is very much not that. Even the little I played, made it clear Diablo II doesn't hold your hand at all and is a very different game than D3 was. With that in mind, I have been very curious about how the team went about balancing the needs of old fans, who ostensibly want an experience as close to the original experience as possible; and Diablo III players who might be put off by not always knowing what they needed to do or some of the harder difficulty early in the game.