Easily update/install Go in wsl

go-wsl.md

Updating/Installing Go in WSL

Remove

Removes older versions

sudo rm -rf /usr/local/go* && sudo rm -rf /usr/local/go

Install

Change version as applicable

VERSION=1.11
OS=linux
ARCH=amd64

cd $HOME
wget https://storage.googleapis.com/golang/go$VERSION.$OS-$ARCH.tar.gz
tar -xvf go$VERSION.$OS-$ARCH.tar.gz
mv go go-$VERSION
sudo mv go-$VERSION /usr/local

Add Go Environment

Open up ~/.bashrc and update/add the following near the bottom (replace with correct go version)

# configure go-1.11
export GOROOT=/usr/local/go-1.11
export GOPATH=$HOME/projects/go
export GOBIN=$GOPATH/bin
export PATH=$PATH:$GOROOT/bin
export PATH=$PATH:$HOME/projects/go/bin

Please how do install wsl fresh on a laptop?

I am having issues doing that

Youtube shoud've shown you the steps. It's as simple as just running following command in PowerShell (as administrator):
wsl --install

That's all you need. After that restart your system and then search Ubuntu in start menu, it should be available there.

Remember that
sudo rm -rf /usr/local/go*
will remove ALL files starting with letters "go" even not related to golang!