Everybody is welcome here, regardless of what type or brand of bike they ride. So, you need not worry because you have a Wal-mart bike. My hat goes off to you for sticking to your budget; there's absolutely no shame in doing that, especially in the age of plastic.
Every year we welcome new riders to TE and, regardless of what they ride, there is a learning curve with the lingo. If you have questions, feel free to ask. There's a subforum specific to "New Riders," too.
So, welcome to TE!
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher