So i just wanted to know how to walljump in super mario bros. Maybe this Isn't a thread, but please help me.

Check out this page http://tasvideos.org/GameResources/NES/SuperMarioBros.html

Here's a gif of how to do the 8-4 wall jump.

The link posted above is great for learning about wall jumps in general.

Thanks!

A great way to practice the timing is in 1-1, where if your dashing then you fall off the area with the bricks, you can time it so you do a walljump off the first pipe. It's shown on the tasvideos site 8Bit_Ethan mentioned.