Sounds like you need to spend some quality time here;
Two important notes -- AE doesn't work like a video editing application AT ALL, and the chances of your learning how to use it successfully through intuition are about 0.01%.
Dave is right; you cannot just jump into After Effects - especially if you think of it as a video editor. It is not video editing software and it doesn't work like one.
Dave's link is pretty good. This page has some more resources on it.
I agree with the others. Though nobody can preclude genuine technical issues on your end, it seems that you expect AE to work completely differently than it actually does like wanting everything to be realtime. Beyond that using generics like "slow nad glitchy" isn't really telling anything to anyone. You will need to be a lot more exact in describing what you actually try to do and what isn't working right.
Honestly, I was using it in the labs on a mac, and it at least was functional. So I do know the basics. I watched these early tutorials and they are useless right now to me because I can't get off the ground. It's probably some format thing, or maybe it's too much for my computer, or... who knows.
Basically, I am rendering out of premiere. I tried opening the entire project, but I thought with all the assets, that may be causing the lag. And by lag, I mean the audio glitches like crazy, and the time bar travels in slow motion. After that I rendered out to an MP4, I forget the format but I have it saved. Does it matter if the premiere format is the same quality as after fx?
Try rendering out of AE's render queue into a proper intermediate codec (NOT something super-compressed like an MP4) - may do something like QuickTime with the Photo-JPEG codec.