hi guys :), i want to do a character as the player and move him left, right and jump, i can move it in that ways but i want to give a walking effect, 
what i mean?, i want that when i move it to left or right he move his legs or feets, how can i do that, there is some tutorial
By “walking effect” I think you mean animation. Google “richard williams walk cycle”.
yes that is :), there are some tutorial where i can learn to do that?
i want to do some like mario bros style gameplay
For pixel art game you can use piskelapp.com
-Make walking animation inside piskel,
-export it as sprite sheet,
-In unity select sprite as multiple and cut it automatically,
-Drop asset on scene,
-in animation window change frame rate if you need to.
For non pixel art animation you can create separated parts of your character body in gimp or photoshop and animate it inside unity.