Sure, there are many other popular tunings, including:

* **Drop C tuning:** This tuning is similar to standard tuning, but the low E string is tuned down two steps to C. This gives the guitar a heavier, more distorted sound than drop D tuning.
* **Open G tuning:** This tuning is tuned to D G D G B D from low to high. It is a very versatile tuning that is often used for blues and rock music.
* **Open A tuning:** This tuning is tuned to E A E A C# E from low to high. It is a very bright and clear tuning that is often used for folk and country music.
* **Open C tuning:** This tuning is tuned to C G C G C E from low to high. It is a very mellow and atmospheric tuning that is often used for fingerstyle playing.

As for your question about drop D and drop C tuning, they do change the chord shapes relative to E tuning. For example, a G chord in E tuning would be an F chord in D tuning and an E chord in C tuning. However, there are also some chord shapes that are the same in all three tunings. For example, a C chord is the same in all three tunings.

It is important to note that there is no one right way to play the guitar. Experiment with different tunings and find what sounds best to you.
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