Newbie struggling with new iMac - Help!!!

Hi All,

Firstly about me i am in the UK so we may have terminology issues, I am Registered Severely Visually Imp (Legally Blind?) My Acuity is Left - 3/60 Right - Perceives Light Only and I have severely reduced field in both eyes <5 degrees.

I recently took the rather brave (?) step of swicthing from PC to Mac and I am now attempting to drive a 27" iMac with with a LogicKeyboard Low Vision Apple Keyboard.

Functionally all is good, I chickened out and have Office 2011 for Mac installed as i need some familiarity to what i am used to. there are however a few things that I could use some advice with.

Changing the default menu font size - the only way i have found of doing this is to reduce the Display resolution which makes it clearer but surely there is a way of increasing the font size of the application menus.

Highlighting text - now this may be a Mac newbie thing but when i highlight text to copy / paste it there is no evidence of the highlighting (colour inversion that I was used to on the PC) Also I have just found with Twitter that hyperlinks and Hashtags when composing a tweet appear invisible, they may be a similar colour to the background but my contrast perception is fairly poor so they just ain't there, how can i cghange the default colour schemes.

The only other gripe I have at the moment is that the Phone book on my iPhone 6+ doesn't seem to be synchronising with my Outlook Address book, any thoughts?

Thanks for taking the time to get thsi far.

Regards

Kerry