You need to start by finding a exchange that will except your currency so you can trade it for BTC, after that it is simple. It is simple and fast to open a trading account send cash and trade that for BTC.
It is really easy to get set up on Poloniex and trade BURST, well I like Polo.
There are many ways to do it simple.
I don’t mine BURST, I trade it, more precisely I churn it and make my BURST grow.
It all depends on what you feel like doing and how.
Maybe later I will start mining BURST again, but for now trading does it for me.