@magvids You can use the Web client that is built into every Mastodon instance, the same one I am using now.
Or use a couple of other clients, if they you prefer. Pinafore, Halcyon, WhaleBird are some of the most commonly used ones. For Mobile devices, cell phones, there are clients for both Android and iOS devices.
These guides will give you general information about the network, and I think they should mention clients as well.
If you are new to using Mastodon, there's a good guide here: https://lifehacker.com/a-beginner-s-guide-to-mastodon-1828503235
We also have another new users guide, posted here : https://write.tedomum.net/rgx/suggestions-and-guidelines-for-new-users-written-by-mastodon-art-administrator
Casey Rollins made a video to explain the Fediverse, here :
"I made this video awhile back to help explain how the #Fediverse works."
https://www.bitchute.com/video/XOtRcgIdqihs/
https://invidio.us/yBRrqbRQ3tM
https://youtu.be/yBRrqbRQ3tM
Any question, just ask, and someone will try and help out.
Have a good day!