[Zeus]

I'd recommend learning about MySQL and then HTML/Javascript.

Spoiler:

You're not named after a botnet, are you?

Well I didn't even think about the botnet when making my username but now that you mention it... That being said I know about basic Web Design and Coding. More than coding though I'm interested in exploitation. Where would I begin with SQLi and XSS?

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There's a lot of sites that function as a playground for this kind of stuff.
An example is https://www.hackthissite.org/

I'm checking it out now.