Hi there, Trinosan!
You actually did a great job for shooting only 13 photos.
I think that the only suggestion I would give you would be to shoot a few more photos when circling something - maybe closer to 24 photos per object. If you do, I think that you'll easily see the halo/torus/rotational arrows/handle appear.
Although you don't have the object handle in your synth, you can still use the fullstop [.] and comma [,] keys to move forward and backward around the guitar.
Also try the original Photosynth viewer in Internet Explorer which is a bit faster at responding to your commands:
Other than that, I'd say, just keep going over the Photosynth video crash course http://bit.ly/howtosynth and the Photosynth Photography Guide, available in the Help section: http://photosynth.net/help.aspx#photosynthhelp
Please ask more questions if you need more answers,
Your fellow synther