Hi!! #1. You will need to move the icon for your tradeskill onto a bar (I use Number 10 bar for tradeskill work. Then click on the icon for weaponcrafting and it will give you a list (the highlighted ones) that you can make at your skill level. As you move up, other items will become available to you.
#2. If you want to do battle (go to an Rvr area for your level), go to a teleporter and click on battlefield. He will send you to the appropriate one for your level.
#3. For now, just select main on your main box (the one that shows everything you do and what others say). That way, you can just return and do not have to type /say everytime you want to say something to someone near you. /say operates to talk to someone in the room you are in (area). /tell send a message to a specific player as in /tell gildragoon and type the message. Once you are invited to join a guild, you can use the guild talk. If you are invited to join a group, you can communicate with an enter and type your message after you select the group button above the communications box.
Each button above the communications box has its own use. You will have to decide how you can communicate with others.
I hope this helps you.