These are your choices of what you can use to paint with. Where the arrow is pointing, clicking this will bring up the window of pens and brushes you see now.The undo button is also there, visible as red and redo as green, change colours and the icon of the pen is showing that is what I am currently using. It shows all the same functions as the tool bar I just described, with a few other settings such as save and how the window is displayed. If you hover long enough windows tips will tell you what it is. If it's not the icon you need, go to the centre and release and you will not pick a tool. Click and hold then drag but don't release, drag onto an icon that pops up in this area and if it's the tool you need, release your click over the icon. The next thing marked in red, I didn't know what to call it other than options and settings but I found out it's called the Lagoon.All of these tools can also be found under the Window tab at the top. It depends on how much room you'd like on your canvas) Colour wheel show/hide and last is the Copic library. If you click this you can display the tools or hide them. Pens (this opens all your drawing tools, mine is open and you can see the choices. Mine is already open in the image below). The last set of tools are the Layers panel pop up (this opens the layers panel window. Good for artists with shakey hands) then the line tool, rectangle drawing tool, polyline tool and ellipsis tool. The next tool is the Freehand drawing then the steady stroke (smooth drawing, control how smooth you want your inking to be. You can't move them around, the always stay in the center. The strange almost hour glass icons are the Horizontal symmetry, verticle symmetry tools. Next is the straight ruler, ellipsis ruler, french curves ruler. The next tool is the Move and Rotate and Scale tool image. You can pan around the canvas using the zoom tool. Zoom which also functions as the hand/move tool. 2nd, rectangle select and Marquee tool/selection tool.

I'll tell you what each icon is and it's function.

Sketchbook pro 6 drawing