Hi, many people are confused between 2 different forks happening in the following days. And I've seen all different questions about it, so I'll try to explain them with simple words without going into much detail. Feel free to expand (or correct) this explanation.

First, what is fork?
A fork is like a ramification of the original Bitcoin, basically copying BTC code and adding some more features.

Bitcoin Gold (BTG) (happening around 10/26) is aiming to have a coin that can be mined using GPU processing (AKA computer video cards usually for gaming) the intention is to make it easy for regular people to mine BTG and remove some power to mining companies in China using special and expensive equipment to mine (known as ASICs).

Segwit2x (in November) is about increasing the size of the block from 1MB to 2MB but it is more controversial as developers of Bitcoin Core are against it while other miners and very influential people backed by the New York agreement are the ones pushing for this change.

In my opinion this is the fork that we should worry about, due to the different opinions there could be a lot of volatility.