This is also a good site for playing chess games their basics page is pretty interesting too. Just don't get carried away playing all the chess variants.
Chesskid or Chess.com
There are a lot of good videos on chesskid.com. If you have trouble understanding the pieces or just looking for some good advice I would suggest this site.
If you would like to continue training your tactics, I would prefer you to use chesstempo.com. The site is free and the puzzles are limitless.
I have used this website for a long time and it has a large online database of more than 8 million games. If you want to do some deeper study of your openings check out this site.
Tips & Resources
This page is aimed to give you what you need in order to continually improve your game. Over the years, I have used many sites to practice and these are the sites I found most useful.