Are all the guitars the same?
No. There are many types of electric guitars available in the market. The right guitar depends on the sound that you are interested in. While some guitars can easily switch between jazz, blues and rock without any perceptible difference, the others cater to only one type of sound. Choosing the sound that you want will simplify your purchase decision. Besides, the sound you also need to take into account the location of the neck on the guitar. The two most common types of positions are the "set-neck" and the "bolt-on" necks. The set-neck allows you to keep on playing longer than bolt-on. The meeting point of the neck and guitar is tighter to allow the sound to move freely between the two.
The only disadvantage of set-neck is that it is difficult to repair or replace once it is damaged. The bolt-on style is available with the cheaper versions of guitars. The design is simple, locking the neck in a slot of the guitar body. Musical experts consider that this type of neck style does not give good quality sound and cannot be played longer, but this is more due to type of materials used. If you don’t mind spending money for a superior quality sound but not a durable electric guitar, go for a set-neck.
What are frets?
You can choose the electric guitar based on how wide and long the neck is. 21, 22 and 24 are the number of frets that you can get with the usual guitars. The guitars from Stratocasters have 21 frets. This gives you a shorter neck but opting for large frets will let you play more easily. Jackson guitars have higher frets. The number of frets you should choose will depend on the number of notes you want to play. A higher number lets you play more sounds.