Not sure if this is thread worthy but I figured my experience could be of help to some others. Ill first start by saying I had no aviation experience other than being in a sim a few times. I knew from researching this forum that this test was gonna be tough. I had about 3-4 months to prepare and I studied about an hour or so a day. The two study guides I primarily focused on were the accepted inc book and one just called the sift study guide. I'll link them at the bottom. These two books were very helpful I learned them inside and out. On top of these books I also read through the FAA manual and reread the important chapters multiple times.
Simple Drawings- Be sure not to double click!! That got me in trouble a few times. The time pauses when switching to another question. Look over the study guides for this but don't spend too much time studying for this.
Hidden Figures-They weren't as convoluted as I was expecting them to be but were tough regardless. I had a decent amount of practice going in but it wasn't of much help. Only got through 27 of them and I guessed on a handful.
Army Aviation Information-This was the second easiest section on the test, those study guides and the FAA manual will adequately prepare you for this for the most part. There were a few airframe specific questions on Army helicopters and their roles. Mostly aerodynamic questions.
Spatial Apperception-This was the easiest section on the test. You are given plenty of time to finish and the concepts are simple to understand if you read over them once or twice in the study guides you'll be fine.
Reading comprehension-This was the toughest reading comprehension test I've ever taken. It was only about a paragraph per question but all of the answer choices were hard to choose from. It does give you plenty of time though.
Math Skills- I did well on the asvab math sections but this was another animal. I thought it would start off easy and get harder as I answered more questions right. But right of the bat it was pretty tough questions. This is where I lost most of my points. I was cut off 18 minutes into the section. Make sure you study distance/rate problems and work problems they gave me a lot of trouble. As far as geometry they provide most of your important formulas but know how to use them. I have heard a lot of good things about Khan Academy. Dont be like me and rest on your laurels since you did good on the asvab, the sift is much harder.
Mechanical Comprehension-Both the study guides provided me adequate information to do well on this sub-test. Easier than I expected.
I ended up with a 62 which I'm satisfied with. I really wanted a 65+ but my math really held me back. This test can be studied for, it takes a lot of preparation though because of how broad it is. Here are the two study guides I used: