If you're considering buying a home, the first thing you'll have to do is set a budget. How much can you afford monthly? It's very important to look at your finances and determine if you can afford the home of your dreams. Buying something larger than life won't help you in an emergency.
Preparing for emergencies is extremely important. As a home owner, you'll be responsible for anything that goes wrong (and something will go wrong). And the problems aren't limited to your house. Can you afford your mortgage if your car breaks down? A medical expense pops up? You're temporarily laid off from your job? You need to have enough saved up for various emergencies. That means, when it's time to consider your down payment, leave a little wiggle room for any necessary repairs.
When you purchase a home, it should be fun and exciting. However, sometimes life gets in the way. If you speak to a real estate specialist about your budget, they'll let you know what you need to live comfortably.