Buy a home roaster, order your green coffee, and roast away!
Roasting your own coffee is an amazing experience, especially if it's your first time!
Sweet Maries have a vast wealth of knowledge to assist you with the type of roaster you should buy, how to use the roaster, and "roasting profiles" you should use as reference to know when your coffee is roast and to which level.
They also sell green coffee beans at good prices, however, they're based in the USA and have high shipping costs.
You can find all of this information here:
Sweet Maries.