Sinhala language as a whole is hard to master. But learn to speak the language is not that hard. You need to find a person who can personaly guide you as there's not much materials online to make you up and running. I found Sewvandi's notebook is a good place to start. www.italki.com/T004925852/notebook.htm good luck :)

wow it's nice to hear that you are in love with my country. Even some people don't love their own country. It's nice that you are learning Sinhalese. It's better to learn a foreign language but Sinhalese is quite difficult language to learn. Don't worry I'm not scaring you. Even though we are native speakers most of us are not aware of most of it's grammar points. Because comparing to English It has really difficult grammatical rules. But you don't have to learn all of them to start speaking. few of them is enough for speaking. So I wish you good luck. Bye.