Ahmed
Welcome to the Wannabee Forum and to PPRune in general.
You will find that there are lots of people here who would be pleased to help you and others who will offer advice. Some have their own agenda and regurgitate the same diatribe.
May I suggest that you spend some time reading through the forum? ( Leezyjet has given you one thread ) By all means use the Search function - and you will find that most of your concerns / questions will have been asked and answered before.
I am temporarily closing the thread before it attracts the usual sciolists.
HWB