Choosing the right roast ultimately comes down to personal preference, but here are some general guidelines to help you out:

Light roast: Bright, acidic, and often fruity
Medium roast: Balanced acidity, with a slightly stronger body than light roast
Dark roast: Bold, chocolatey, and sometimes bitter

To maintain freshness, store your coffee in an airtight container at room temperature, away from direct sunlight and moisture.

The quality of a bag of coffee will lose different characteristics at different points. A coffee that tastes metallic and bitter may have been roasted a few days before, a coffee that is too acidic may have been roasted in the last two weeks. The coffee may start to taste flat after a month or two. Ground coffee will start to lose its flavour after just a few days, so it's best to grind your beans just before brewing.

There are many ways to brew coffee, and the method you choose will depend on your personal preferences. However, here are some general tips:

Use fresh, high-quality beans
Grind your beans just before brewing
Use the right amount of coffee (typically 1g of coffee for every 16g of water for a filter coffee)
Use clean, filtered water
Brew your coffee at the right temperature (usually around 94ºc)
Brew your coffee for the right amount of time (usually 4-5 minutes)

One of the best ways to support local coffee roasters is to buy their coffee! You can also follow them on social media, leave positive reviews, and tell your friends about them. And if you're really passionate about coffee, you can even take a coffee brewing class or volunteer at a local coffee festival.

The amount of caffeine in a cup of coffee can vary depending on the type of coffee, the brewing method, and the serving size. A well-brewed cup of coffee will generally have more caffeine than a badly brewed one.

The best brewing method for you will depend on your personal preferences, the type of coffee you're using, and how much time you have. Some popular brewing methods include aeropress, French press, pour-over, and espresso.

A single-origin coffee comes from a specific region or farm, and the beans are not mixed with beans from other regions. This type of coffee often has a unique flavour profile that reflects the region it comes from. A blend, on the other hand, is made up of beans from multiple regions and is usually designed to create a consistent flavour profile.

Look for coffee that has been certified by a third-party organisation such as Fairtrade or Rainforest Alliance. These certifications ensure that the coffee was produced in accordance with specific social, environmental, and economic standards. You can also look for information about the coffee's origin and the roaster's sourcing practices.