Curious?
Back door play can be enjoyable if done properly. If you are considering this, research and communication (if with a partner) is key. Whether, by yourself or with a partner, prep work is key and of course a lot of lube!
Important steps to consider:
Communicate, Practice, Lubricate,
Relax, Protect
Once you are comfortable with the basics, then it is time to consider taking things to the next level, whatever you (and your partner) may feel that may be.
Remember the ultimate outcome is to ENJOY!