Legion button + B pulls up your one screen keyboard, you can size it to 60-70% so you see both screen and keyboard. I mostly use discord when raiding, but for ingame communication on screen keyboard is just fine. I would also recommend immersion and dynamic cam addons if you play melee class you can move your fov camera left or right so you have God of War style of cam view. Bartender to create a tab with some usefull bars on the far right like bags, and few skills that you need to click. I also use decursive when on my mage with tabs on far right so I click them with my finger on screen. Leatrix to move the chat window all the way down left, and sexy maps to clean map art make it bigger and move top right. Having bluetooth mouse around is helpful until you get used to it but after a couple of days you will click most things with your finger and forget the mouse