Do not bother for any reason unless you want to practice with mining altcoins. I use Minergate for some fun things, but it is just for fun. Mining is to difficult to be profitable at this time, In my opinion.
Yes but I do not recommend you to mine bitcoins or altcoins with your personal laptop as it wont make you the expected amount of profit. Due to more electric bills plus it will destroy your hardware (GPU) and make you regret one day of doing so which I have already experienced