I typically quote my current speed at about 2400wpm, 250 pages/hr. In truth, I sometimes read faster and sometimes slower.
Reading is no different from any other skill. You don’t skim. There aren’t truly shortcuts. You read. With your eyes. Nothing else.
And just like when you read a normal pace, you will find and sometimes not find spelling errors. You may notice, or not notice problems with grammar issues. You will have the same issues with logical flaws and poor writing. You will be frustrated and you will be overjoyed by terrible and great authors. I am just like everyone else … only my pace is faster.
For more on how I became a speed reader, here’s a link.