What is the best opening for me to learn?

Check my profile (I have played chess for a long time, but have barely even improved)

It depends on what you like to play

For white only 2 openings to chose from:

1. The London System
2. The Bishop's Opening

For black only the Philidor's Defence.

e4 - knight - bishop - c3 - d4 - castle
(do not have a board at hand)
good luck :-)

I love the Ruy Lopez if you like fast open and aggressive games as white.

Myself, here! I like aggressive games as white ;-)

learn by reading your first Chess Book ... Capablanca's Best Chess Endings in 60 Complete Games by Irving Chernev . Also logical Chess Move by Move by Irving Chernev & Then Neil Mcdonnel The Art of Logical Thinking In Chess Should Take You a few minutes per game or about six weeks for this task as you should be going through the games with comments & absorbing the Information @a-pie , As far as openings are concerned You can watch you tube chess videos free on basic opening principles and ideas . If you just learn openings don't talk to me evea' hehe' as you need the three books mentioned in the next Six weeks (No more than that !) to get a FIRM beginning FOOTHOLD . Remember Study Play Play Study , It's a healthy ballance of the two that will get you There wherever there is as after your rating starts to rise you will be even more interested than you already are . I guess after checking your Profile are you Interested in Chess or only atomic be cause if it's Atomic you won't be getting any tips by me as I don't know the Rules . Read those three books quickly please thank you then ask me for more to read ok ? @a-pie

Yes! Listen to Thunderclap. Forget about specific openings for now.

Playing "Horde" (chess variant) is fun, and maybe gives insights.
Ground Line is Dead Line. I love it.

Sometimes playing chess variants is like having leprosy.