First of all, I predict you will "learn something" from studying the guitar...not because the "stars" say so, but because EVERYBODY learns something from their studies. As to how good you get on the guitar, that depends on how much you practice!
There are certain people who are incredibly good at music from birth (Mozart comes to mind) called "prodigies", but you are not one of those people. As with the case of the most of us you have to work long at and study something in order to get better at it.
However, you DO have a focus by two T-squares on your 5th house and Sun (self-expression, also performing arts), so you DO have something very important to EVERY musician...an interest in performing. In addition, you have something which can make it challenging to learn...frustration, indicated by Saturn (duty, also structure) conjunct (energy is combined with) Uranus (friends, also unstructuring). People with this conjunction can tend to build things up only to tear them down immediately afterward. Nothing is "good enough" from the moment it is created, so the person builds and destroys, getting frustrated in the process because nothing is "getting done".
With this aspect, it is VERY important to cultivate patience and moderation in your reactions. After you build something up and realize it isn't "perfect", learn to ACCEPT its imperfection. Of course, you will want to "restructure" it, but you can do this in LITTLE pieces, rather than "all at once".
What the heck does this have to do with GUITAR PLAYING!!!!!!!!!!!!!!!!!
Everything. In learning how to play the guitar, you MUST be patient, practicing over and over and over again the different chords, chord changes, strumming and picking styles, etc. So when you first start out to play the guitar, understand that you are doing something which may take many YEARS to accomplish. Once you understand that, decide what PART of guitar playing you want to work on: fretting, strumming, picking, chord changing, special effects...where do you want to begin? And THEN decide to work on it, setting yourself definite goals (i.e., I want to learn three new chords by the end of the week). Practice the exercises/chords/etc., taking it VERY slowly, carefully fretting/playing/etc.
In the beginning, if you are playing music you might only want to play one or two measures a day! And then work on PERFECTING those one or two measures. I mention all this because you have Mercury (thinking/daily work) focused in the 5th house (self-expression, also performing arts) trine (energy goes very easily with) Jupiter (expansion, also wisdom), so you HAVE the ability to learn the details of performance in a step-by-step way...you just have to FORCE yourself to do it, and to IGNORE those "little voices" that say "that isn't very good, [your favorite guitar player] is MUCH better than that!" Just remember that it took TIME for your favorite guitar player to get as good as he/she is!
And that's all you really need...time and patience to learn the basics of guitar work and perfect them. As to becoming "professional", all you need to do is find someone willing to pay you to play and you're a professional! But...perhaps it is better to LEARN the guitar first before "turing pro"!