A lot will depend on what country you are in when it comes to sourcing BTC. I would strongly advise against using MP (Money Pak) for BTC, this is one of the most common scams on SR. Best thing you can do to get you started is have a thorough read of the SR wiki, here is the link: https://dkn255hz262ypmii.onion.to/wiki/index.php?title=Main_Page Once you have had a good read of that and done some research on the forums come back here if you still have any unanswered questions. When first starting out it is beneficial for you to educate yourself on as many SR related matters as possible, if you are struggling with BTC purchases it suggestes to me you have a lot of reading ahead of you before making any orders. Good luck!