The way I taught myself how to play guitar was to start with the chords based on the actual tuning of the guitar strings.. E, A, D, G, B, E.. otherwise known as "cowboy chords" or "Beatle chords.. [for obvious reasons.]
Get any simple guitar book with those "boxes" showing the fingering of the chords.
You can cover a lot of ground with these. For instance,
The Blues in A is "A-D-E": the Blues in E is: E-A-B...
Now there are other tones in chords, but this will give you a good solid start and send you on your way..
Good luck and good playing.. ~ g