Estonia is famous for its e-services and fast Internet. “The world's most advanced digital society” is our country's branding slogan. If you want to read about our Digital Tiger Leap and the birth of e-nation, then you'll find a great overview here: https://e-estonia.com/story/
Choose Your TV & Internet plan
Estonians are active Internet users: About 92% of households have an Internet connection, and it is quite easy to set up. The biggest telecommunication companies, Elisa, Telia, and Tele2, are in constant competition over market share, and they are more than willing to offer their best to snatch you as their newest client.
These companies offer TV-and-Internet packages, and you can choose the package specific to your needs. If you want to find the best deal, and you have time to compare different options, then you could start discussions with several companies. The market is tight, though, so all of the companies offer reasonable prices and packages.
Their websites have a great overview of different service packages, but the information is mostly in Estonian. If Google Translate doesn't help, then it would be wise to use the chat function to ask for guidance, or to even drop by one of their physical stores, usually located in a supermarket.
Mobile Service Provider
The good news is that mobile service providers are the same companies that offer TV and Internet: Elisa, Telia, and Tele2. There aren't big differences in what they offer, especially if you stay in cities or towns. For most rural places in Estonia, you might have connection problems, so certain operations might work better than others, but make sure to ask about that sort of issue if you are really moving into the depths of the forest or countryside!
SIM cards For Temporary Residents
To use mobile services, you need to be a resident before receiving your permit. For now, your only mobile option is a prepaid SIM. Those SIM cards are available in those small R-kiosk booths around the town, or from the service provider stores in bigger supermarkets.