okay so the bitcoin i currently hold in bitpanda and in blockchain wallet... should i just leave them there? will my coins just become what ever the outcome is?

Should i transfer my bitcoins from those online wallets to a local core wallet on my computer? if so how do i download the wallet for the 'new' bitcoin? how will my coins be duplicated to the new coin??

Will my mining rigs currently mining dash and eth and other alt coins be affected?

gaddd i hate all this forking shit! haha