Illegally - just start advertising that you buy and sell Bitcoins.u00a0 Sites like localbitcoins are good places to do so.u00a0 Then, hope you dont get caught and/or if you do get caught that your business gets just a slap on the wrist.Legally - Apply for a money transmission license in the states that require them by paying applicable fees and passing applicable tests.u00a0 Conform to the requirements set forth by FinCEN, Anti-Money Laundering and Know Your Customer regulations designed to prevent money laundering, tax evasion, terrorist funding, and illegal transactions although technically if you're volume is under a certain threshold you're probably exempt from FinCEN requirements, but probably not MTL requirement depending on your state and pejrhaps special exemptions like being a real estate broker in Iowa is exempt from requiring an MTL currently.u00a0 Or partner with an entity that does have an MTL.Once you comply legally, then it is just a matter of following step one or scaling up the business.u00a0 Okay okay...so many start ups don't exactly meet these necessities right off the bat.u00a0 Heck, even PayPal faced huge fines pending compliance with regulations regarding tranferring funds.u00a0 Regardless, it's ultimately a requirment for a legal venture.And I know you might be saying, who's going to focus on just a simple person making an extra few bucks exchanging Bitcoins...well...actually, the government is really interested.u00a0 Theyve shut down small operations before in little shops with BTC atm machines.u00a0 That and if you ever find yourself in legal problems, throwing money laundering into the mix can be a rabbit hole of problems.u00a0 The IRS will have you a list, the FBI will probably have you on a list and honestly the DEA will probably have you on a list because crypto currencies are so popular for such funding.