The best piece of advice I can offer you is. . .relax. Don't try to take on too much to start with. I remember when I became interested in jazz I used to listen to Pat Metheny and think "the stuff he's playing is physically impossible."
I have a Jim Hall Signature Licks book and I can play some stuff at slow tempos, but when it comes to ramping up the speed a little I just can't do it!
There is absolutely nothing wrong with starting slow. Whenever I'm trying to learn ANYTHING new, I put the metronome on an obnoxiously low setting. I then practice it over and over again until I don't have to think about it. Then I move the metronome up 10-20 clicks and repeat. Eventually you'll get to a tempo where you can't play it and then you back up 5-10 clicks and move forward at smaller increments.
Start simple. You don't even have to start with a guitar solo. Try transcribing some Miles Davis stuff from the 50's (Milestones, Kind of Blue, etc.). There are not a whole lot of notes to deal with AND it's a textbook of swing feel. Even if you only learn a solo a few bars at a time, concentrating on placing each note in the right spot in those few bars will do wonders for you instead of "trying" to get through licks from a book.
I personally don't subscribe to using lick/transcription books. I feel that learning a lick/solo from a book, you lose the context. Personally, I internalize things much better when I hear music within the context of things rather than just notes on a page. This is not to say that the books don't serve a purpose for me. I think the books are a good place to devise exercises for yourself.
As far as using the metronome, I always use it on 2 and 4 (. . .for swing, anyway). I know it takes some people a while to get used to feeling it but I used to be a drummer so it came naturally to me with the whole "hi hat on 2 and 4" thing. When I practice things at faster tempos (I'd say anything north of 250), I switch it to 1 and 3.
Really the most important thing is not to get discouraged. Take anything new that you get out of any practice session as a win for the day. Even if it's one bar of someone's solo, or playing something at a faster metronome marking. Progress is progress!!