How can I get really good at guitar?/ I want to be in a band

go to a tutor, or better sit at home and learn from justinguitar.com

Pracrtice, practice and practice. Also for music always be yourself it may help a lot

Ok thanks and yeah I have my own style and everything...

Btw I watched a ted talk today search it on youtube "tedtalk how to get good at something in 20hours"

Just practice, loads. Simple, hardly original advice that you probably don't feel helps at all, but that's pretty much all there is to it. Tuition will help guide you if you can afford it, and if not there are millions of good youtube videos. Jimi Hendrix started at age 15 so 16 isn't too bad lol. I sometimes wish I had started guitar really early as I think I could have been excellent. (I seem to have particularly good coordination/agility with my hands/fingers, for instance I am an extremely fast typist. But oh well, maybe in a parallel universe)

I started at 13 and progressed very rapidly in the first year or so simply by hardcore practising, playing all the time, writing my own stuff, spending loads of time improvising, learning random tabs of songs I liked, and learning from a not particularly great but still helpful guitar teacher. Started in a band after maybe half a year of playing and that was always a good source of inspiration and a great outlet (and you will always definitely sound much better at ear-busting volumes..). Did my grade 6 after a year and a half, fluffed it a bit but got merit, then went on to working on grade 7 and 8, and was certainly grade 8 standard + at a point but since then my progress was extremely slow. The band kept going for a while but eventually I was no longer playing for anything but it, and not improving at all. That ended last year with everyone going off to uni, as did any serious playing, and I am 19 now with six years under my belt but tbh my technique has slipped loads (and it was never excellent).

So I guess I can give mistake-based advice: if you wanna stay good, you can't stop practising. And you have to be very, very religious about practicing your technique (this is one area where a really good teacher will be a godsend) if you want to get to the shredding levels. I've always had and still have good "feel", but there are countless people with great feel who can also blow your mind with ridiculous technical prowess. It is not easy to rise above the crowd with such a popular instrument. I think your practise needs to be well scheduled, rigorous, and, above all, honest. You have to realise what is holding you back technically; you have to always focus on improving and not basking in what you have.

Thank you for replying in such depth. Sounds like you can rock on the guitar. I think it's so cool that you played in a band. I know I really have to practice but at the moment it's hard to find the time. I'm practicing an hour a day at the moment. Is that enough? I know it's probably not... At the moment I'm just learning from youtube videos- learning several rock songs on the guitar. I'm also playing my own stuff which isn't technical at all but it still sounds pretty good.

No worries. It was probably one of the best things that I did in my teenager years; I've always been a bit overly introverted and it drew me out a bit more and forced me to face things I found pretty terrifying head on (I was lead singer as well), was a wonderful creative outlet (we were an originals band eventually, even released a little CD lol, I wrote most of the music and lyrics), and did get us a little bit of cash every now and then..
Depends on how you're practising. For now, at this very early stage, when you are finding your feet, I suppose it would be a draining buzzkill to try to be really rigorous and scheduled, but in a small time frame as that, the need for schedule is amplified (no pun intended). But perhaps I am overkilling it here because technique/technical prowess is not everything. Look at somebody like Billie Joe Armstrong of Green Day, probably thousands on youtube who can play him off the stage, but it's the music he's written, in spite of a lack of super flash skills, that has made his band a phenomenal success. Look at B.B King, admitted himself he couldn't play fast for crap, but it is his unique feel and tone that mattered. So perhaps you are not doing too badly in trying to craft a style for yourself and writing your own stuff. But if you do happen to be serious about improving technique fast, there are many (mainly boring!) exercises you can find online with a quick google.