I have one (if you're still looking)

Best bet would be to just "Throw yourself in the deep end of the pool" - There are literally hundreds of Carpenters in Qweismeh - Amman. Walk in to any one you like (or have heard of) and offer your "internship" services for free... Many carpenters need the help and would be willing to show you the tricks of the trade by making you a helper in the beginning, progressing slowly as your advancement as a skilled labourer from then on would all depend on your learning curve, stamina, resourcefulness and self-drive. Be Pro-Active!