Unidentified

so i saw this type of spider like 6 months ago first time, im 25 and never ever in my life seen spider like this, today after 6 months i saw either the same spider not sure it was same looking but big as my palm i freaked out so maybe someone can let me know the type of the spider so i can see what it does, and also if someone can let me know how do i protect my friggin house from these, or ill probs just burn it 😀 😀