The following advice is very general, but has a practical application. You must listen to what you prefer, for example if you like a fast and fun, but also simple, stringed acoustic guitar then pick an Eb/G to fill that role. Another good choice is an F/B or C in which case it looks like you love a heavy sound, but a slow and mellow sound works better. Remember to play the instrument correctly, too, not necessarily a lot, a few notes, some fills, some fills not.
All those questions are very general, there are probably other reasons.
What is the most important thing to know about guitars before buying? Pick any guitar for any type of rock. It is the most important thing. The best ones are made by Gibson and other Gibson brands, because Gibson has the reputation to make the highest quality guitars. You can buy a Gibson guitar any time from today. Gibson models are best, because they can handle the extreme use of the guitar in extreme guitar music, and they work well for many different kinds of musicians. The fact that they are best-made, is due to their good attention to detail. If you are buying for a non-musician you should choose one of the Gibson guitars.
What are the pros and cons of all the major brands? Most brands have their pros and cons. A Gibson model that looks good might not be the most comfortable guitar for your ears. That is one reason why if that is the case then don’t buy it. On the other hand it would be a good idea to know which model of guitar you want, and if there is no other good option, buy whatever the least expensive option is. If the options aren’t enough then a Gibson model should be the better choice.
What do I need to know? You need an opinion, a general idea of which model and what kind of instrument it is. So first I do not need to tell you which instrument is best, but for your decision I recommend a good look at all the available information about that model.
What equipment do you use it? All of the equipment that you will need. But first try to discover what kind of sound you like, and which guitars sound good together with that. I want your opinion about which guitar type you like. Then I will tell you what instrument to buy.
Is there any information available online about any manufacturer, or a particular model of guitar? Yes, almost all the information about guitars is also
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