My suggestion is to go to www.justinguitar.com and go through his beginner's lessons, which will teach you some important chords and how to play them well. The lessons are organized into batches (I don't recall what he calls them). At the end of each batch or grouping of lessons, there are songs you can play the use the material you just learned.
I have no association with www.justinguitar.com aside from that of a satisfied user. It is a free, donation requested, site. If you find it valuable, make a donation. If it doesn't work for you, then go over to www.yourguitarsage.com and see how you like that. Likewise, I have no association with www.yourguitarsage.com, but it is another site with good instructional material for beginners, but with a different style and approach from www.justinguitar.com. There are also recommended songs on that site, as well as many, many, many song lessons if you want to just jump right into those.