connection between fear and anger(dwesha) I need to know if "Dwesha" anger and fear are connected according to the Buddhist teachings?
Also how to overcome fear or phobias with the practices of Buddhism?
Anger, Fear, Jealousy are all instances of the 2nd root of evil, 'Dosa', which translates to English as 'aversion'. They basically represent a disliking towards someone or something. Usually if it's someone more powerful than you, the disliking turns into fear. If not, it becomes anger. 

Anger is mostly caused when you expect things to behave according to your liking. Fear is caused when you cling to things, taking them as I, me or mine. To overcome fear, you can recollect the virtues of the Triple gem and feel confident that you have taken refuge under them. But the permanent solution is to do Vipassana meditation and get rid of your clinging and the notion of self. 

When one attains the state of Anagami, neither anger nor fear can ever enter one's mind again.