I download applications and try to figure them out...most come from warzes sites so they are freebies...I also like to look for viruses and trojans and see how they work...it's amazing what 14 or 15 year old can do these days...lol...here is site I visit for free warzes...
phazeddl.com but you have to be careful what you download...if you do download anything from here just remember to run it thru your antivirus program before opening...