First Download Metamask Extension for Chrome, and create an account
Go to eos.io website & Scroll down to the Distribution process and Click on Get EOS Button under the rounding EOS symbol
Scroll down until to here.
Another tap will open and it will load and synchronize with Metamask, and this page will appear.
This is the ETH address where you should send ETH that you will need to use to generate the your EOS public key and to contribute with EOS distribution
Once you generated your public key successfully, click on Get EOS Token, and the screen should become like this.
Now input how much you want to contribute, and keep sufficient ETH amount for transactions fees that you will need to use to claim your EOS Tokens, and transfer them
Go to your EOS Compatible wallet, copy the address, and transfer your claimed EOS there.