Noob Question about Web Challenges

Hello everyone, I am really new to this hacking world… I have been watching videos for alot of time but i only started learning really hard this year…
Well it took me alot of research to get into this website… It took me 2 or 3 days but i did it…
So now let’s get to the real question: I don’t really know how to even do a web challenge… I see a ip and i see a port but i don’t really know what to do with it…
When trying to solve machines you can always ping them or scan them with nmap or even go to your browser and see a web page if this machines have http enable…
Can someone please help me with this??

nevermind… but… ou just have to put in the browser ip x.x.x.x: