I published a post on this just an hour ago. If you wan to do take the hands on approach, just try @mcfarhat's tutorial which was linked below. If you want to make it easy and fast, just go to https://codebull.github.io/AccountCreate You can check out the GitHub repository here. It's a simple tool from @reazuliqbal
You can get roughly 1 account per 5 days per 2600 SP at the moment. The cost will keep fluctuation. 5 Trillion RC is a good estimate per account claim.
You will have to use @knircky account for claiming accounts or delegate to @steem-bounty or power it up. My full article can be viewed here.