I used the
Magoosh videos, youtube PrepScholar GMAT videos, Veritas videos, purchased the full official EA package and also used the Official GMAT Review book.
I found the videos very helpful as I'm almost 11 years out of undergrad. I spent a few months studying mostly on weekends given the demands of my work schedule.
As others mentioned, the online Pearson EA software is full of issues and different from the practice layout. My calculator didn't work on my first online test despite testing the software twice before sitting for the actual exam. A proctor had to reset the software, but the time never stops and I lost ~5 min. I had to spend several weeks fighting with Pearson to get a refund and attempted to cancel that score as one of my two online attempts, which was never resolved.
I took it once more in person as you can take the EA twice online and twice in person.
Practice 1 Practice 2 Practice 3 Practice 4 Online EA 1 Online EA 2 In person EA 3
IR 10 8 9 11 11 8 12
Verbal 11 10 11 10 9 12 10
Quant 9 10 8 7 7 7 9
Total 150 148 148 148 147 147 151
I had been admitted to NYU part-time previously and I'm currently admitted to USC full-time. Waiting to hear from NYU and Columbia full-time currently. Fingers crossed.