Microsoft ended support for Windows XP a longtime ago, but that does not mean you can stop using your computer. The claims that using Microsoft Windows XP connected to the internet will get you infected with spyware, virus, ect is mostly false. A computer simply connected to the internet will NOT get your computer infected with spyware, virus, ect as you must perform some action such as visiting a website that is known to contain spyware, virus, ect or downloading something from unofficial sources usually from a piracy website.
Using the default web browser Microsoft Internet Explorer will not connect to most website if you are using SSL and even using non-SSL, but you can download other web browsers that will allow you to connect to most if not all of the websites that are used today.
Mypal
The first web browser is Mypal that is based off of Firefox. The web browser does support Windows XP, but the browser seems to sometime have issues with connecting some websites as they say the browser is ether not supported or out of date.
Download at https://www.mypal-browser.org/download.html
Supermium
The second web browser is Supermium that is based off of Google Chrome. While this also supports Windows XP, the browser seems to be the best as it does not seem to have any issues connecting to any website like Mypal.
Download at https://supermium.neocities.org
Other you may want to give a try
Other uses for your Windows XP: