Preparing to let a property takes considerable planning and effort, and there are many things to consider before you rush into making any decisions. Even once a tenancy is underway, you need to be ready to devote time at short notice to sort out any problems.
The most important decision you'll probably need to make is choosing the right property to buy - if you are unable to let it because it doesn't meet your potential tenant's needs, then your investment will lose you money.
You'll also need to think about the risks involved in becoming a landlord - and the tax implications.