Install your Reign of chaos. Then install your Frozen throne. Your patch should be 1.21. The latest now is 1.22. Then go to getdota.com. Download the latest map. Once dl finish. Go to the file where you install your frozen throne. You will see a file name "maps". Click it and file name "Downloads" and paste the map you just downloaded inside. Next time when you dl file, all the map will go into downloads. So just just use garena,flying spaghetti monster,battlenet or whatever. Use battle net as you are using orginal. And you are ready to play. Good luck and don't be an addict. I was once a dota addict LOL

You should play with ai. It works. Train with ai. Then go for ai+. I say playing with ai+ is much more fun then playing with noobs.