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Arweave
Arweave is a blockchain dedicated to file storage. Probably the most prolific website to take advantage of Arweave is Odysee, which is primarily a YouTube alternative (but Odysee supports other content too).
AR seems very hard to buy on exchanges (Coinbase doesn't support it). Look for information online about what exchanges support AR if you want to buy some.
If you use a link-in-bio service supporting an option to show people your crypto addresses, notably Gravatar, some Arweave addresses may be seen as invalid by that service (especially if the address contains non-alphanumeric characters).
Wander
Wander seems like the most common Arweave wallet, and it's required for payments on Odysee. It also supports the AO network (https://ao.arweave.net). They have a browser extension and mobile app, and they even support an extensionless web connection with social accounts (although I would recommend using the browser extension).
Sometimes the Wander browser extension (at least on Chromium) can cause issues with certain websites. If this happens you can just set Wander to only operate on websites that use it (for example I told Brave Browser to only allow Wander to operate on Odysee's website).
Platforms: iOS, Android, Chromium, Firefox