I have a suspicion it may be just the way you are using the edge tool.
would not let me make several pieces in a line ONLY at right angles.
try to move it sideways and it only goes up and down,
kinda glad this software is only on trial - it sure needs work.
First I can assure you that these tools work perfectly, so it is just the way you are using them (unless there is a video card issue as Robert referred to but I suspect that may not be the case).
Some of the things you describe indicate that you have ORTHO turned on (right end of Status bar at the bottom of the screen). This is used to make sure you get walls etc at right angles. Turn it off and you can put things at any angle.
Also sounds as though you are inserting the edging in short sections (or this may be just becasue you had Ortho on). All you do is click on the screen, then click again a bit further on (at any angle), then again, and again, and it will join the clicks together with your edge and right click when you have finished. Now if you want to curve the sections, right click and select Curve as was mentioned earlier. If you need to, you can right click, select Break and click into one of the sections to insert a break point, then you can curve each side of the break.
Try that (Ortho off) as I suspect that is the problem.
Allan