Welcome to steemit brownbear.
Don't get too hung up on the bit coin for now, just concentrate on learning to use the site. Have fun reading some great posts, commenting and up voting the posts you like most. this vid will give you a basic idea of bit coin you can learn the rest as you need it https://vimeo.com/ondemand/bitcoin

writing well is like anything the more you do it the easier it gets.
Enjoy the sun while it lasts
Phoenixmaid x