Help, please. Stuck in tutorial 2 step 8.

I like the Creo tutorial. Last week I downloaded a tutorial for Brand A, and after many frustrating hours of working on it, ditched it and the program. Creo is much better.

However, I am stuck on the second Creo tutorial. In Step 8, it contains the following instruction: "Press spacebar, click [tangent line icon] on the Option Mini Toolbar (OMT), and draw a circle (radius 25 units) such that the earlier line is tangential to this circle also. This circle is at a distance of 49 units from the end of the line."

Now I am sure the above makes sense to folks who already know how to use the program, but I have spent a couple of hours trying to get this to work and have failed. I can get a tangential circle at some odd distance from the end of the line or I can get a circle centered on the lower line and 49 units from the end. How does one do both? There seems to be some steps left out. (When I hit the space bar, it moves the tutorial instead of bringing up the little menu.)

Each time I perform an action on the drawing, the tutorial disappears. Is there any way to keep it on the screen?

Thanks,

Bob