学好了英语怎么出国？

there are only two ways for you to go abroad.
one is to study, the other one is migration. for the first one, you need to prepare a large sum of money, attend the english test such as ielts etc and prepare for school application, visa application.
for migration, you need to have related work experience for certain years. in your case, you are not qualified for migration skill requirements. but it depends on what skills you have.
anyway, first at all, you need to consider where to go. there are so many questions you are unclear. i suggest you think about it thoroughly and come here to ask questions.

考个托福什么的，分数高了也许有奖学金，那样就可以免费在国外深造，然后毕业了在那找个工作

跟你说实在的吧.
我现在也在学新概念!
既然你选择了新概念.那么建议你从1册开始学起.一本经典的教材存在和风靡这么长时间.肯定有它存在的道理的.
你的水平口语是关键.从1册开始学.就好比选择了建一栋大楼.首先要根据这个大楼的具体地貌和具体位置开始打基础.只有符合这栋楼的砖瓦和基础,才能搭建好符合这个大楼的要素.
新概念背诵绝对有用.我现在背到2册中间了,开始没感觉,到后期,平时不知不觉的就有种脱口而出的冲动.我想这就是效果,你水平扎实了.花钱出国绝对不会很多,那些花很多钱的是因为自身因素不过关.任何事务是相对的,难道不是吗？你能明白我的意思吗!