1.People are getting used to the idea of online shopping, they're getting used to the idea of mobile.
get used to 习惯于…
You will soon become [get] used to the weather here.
你很快就会习惯这里的气候 。
Driving on the left is strange at first but you get used to it.
沿着路的左侧驾车刚开始时有些别扭,可是习惯就好了 。
2.What I find that is working in South Africa, is if you build an app that is relevant to the country because it solves a local problem.
relevant to 有关的,相应的;与…有关的
These comments are not directly relevant to this enquiry.
这些意见与这项调查没有直接联系 。
I don't think his remarks are relevant to our discussion.
我认为他的话不切我们的议题 。