The ES is probably not where you want to start.
It is like looking for books on how to win a NASCAR race
before you got your driver license.
I don't agree. There is no magical instrument out there which is super easy to trade and they give away free money, and let you get into a move very late, and never try to stop you out, etc.
All trading is simply a matter of stats and risk and reward. The ES moves slow enough that its easy to get in without too much whipsawing back and forth. Something like the NQ tends to have many spikes. If you trade the CL, you can cough and be down $200.
From a money perspective, the ES may be stuck in an RTH range of less than 10 points on many days, but this is actually good. Everyone thinks it limits your win potential, but for a new trader who will surely lose, it limits how much he will be losing. Sure perhaps you can say its hard to make your money back in the ES if you're down a few points because those few points take hours to extract, but it at least won't stop you out in seconds, like the NQ can do when it blows through levels and such.
If you think stocks are easier, now you're having to learn all about the different exchanges and dark pools and all that jazz. The futures at least have a central exchange where, other than spoofing, ensures that things fill accordingly, no matter if you're a big player or small player.
In my opinion, learning to trade on the ES can be just as easy or just as hard as you make it, but no one instrument out there is perfect. Some fit different personality types better, but if you're new, you have no idea yet what's best for you.