2. There's a difference between price and quality. Don't buy an instrument just because it's expensive, unless you actually love it, because if you do then you're wasting money on something that could just as easily be something phenomenal. Consider the following brands if you're on a budget - Epiphone, Squier, Ibanez, Yamaha, and anything used or discounted.
3. Make sure you love it before you buy it if you possibly can. Loving your instrument is important because if you love it, you'll be far more likely to pick it up. Love how it looks, love how it plays, love how it feels. The more time and patience, the less you have to compromise money and how perfect your guitar is for you.
4. Learn things you're not comfortable learning. Vincent Van Gogh was a great artist, and he said, "If you hear a voice within you say 'you cannot paint,' then by all means paint, and that voice will be silenced." When you do what you're not strong enough to do, enough times, you'll rise to the level of being able to do it.
5. Play with other people every single time you have the opportunity, because you will grow in regards to your rhythm, your dynamics, your knowledge, your diversity, your confidence, your comfort playing in front of people, and your love for music. And more than even that, you'll be surrounded with music. The more you surround yourself with music, the harder it is to escape.
There are my five tips to bring you above and beyond with guitar. To go even further, let me invite you to my blog where I post a lot more just like this.