In terms of memorizing songs, find the "pattern" in the song. Once you look you may see that it is easier than you think. Instead of trying to get from point A (start of song) to point B (end of song), look at how it is structured. You'll be surprised at how many songs break down into simple chorus/verses that just repeat a certain number of times. So you only have to memorize sections, then just know when to play them.

As far as solos, break those down to. Take a couple measures and practice them slow until you can nail them down, then just add on a few more measures. Don't try to blast all the way through because by the time you get to the end you'll realize that you either forgot the beginning, or you never really learned it at all in the first place.